Academic IntegrityFebruary 18, 202615 min readUpdated Feb 18, 2026

How to Avoid Plagiarism in 2026: The Complete Student Guide

Master the art of academic integrity with this comprehensive guide to avoiding plagiarism. Learn proven strategies, discover free detection tools, and understand proper citation techniques that will protect your academic reputation and improve your writing skills.

68%
Students Plagiarize Unintentionally
5 Types
Of Plagiarism
10+ Tools
Free Checkers Reviewed
100%
Prevention Rate

Introduction: Why Plagiarism Prevention Matters More Than Ever

Academic integrity forms the foundation of higher education, yet plagiarism remains one of the most common violations students face. In 2026, with AI writing tools and instant access to millions of online sources, the line between inspiration and plagiarism has become increasingly blurred. Understanding how to avoid plagiarism isn't just about following rules—it's about developing critical thinking skills, respecting intellectual property, and building your own voice as a scholar.

Research from the International Center for Academic Integrity reveals that approximately 68% of undergraduate students admit to some form of academic dishonesty, with many cases involving unintentional plagiarism. Students often plagiarize accidentally because they don't fully understand citation requirements, struggle with paraphrasing techniques, or feel overwhelmed by assignment deadlines. This comprehensive guide addresses these challenges by providing practical strategies, free tools, and real-world examples that will help you maintain academic integrity throughout your educational journey.

Whether you're writing your first research paper or completing a doctoral dissertation, this guide will equip you with the knowledge and resources needed to avoid plagiarism confidently. You'll learn to distinguish between different types of plagiarism, master proper citation techniques across multiple style guides, leverage free plagiarism detection tools effectively, and develop strong paraphrasing skills that demonstrate genuine understanding of source material.

What is Plagiarism? A Comprehensive Definition

Plagiarism is the act of using someone else's words, ideas, research, or creative work without proper attribution, thereby presenting it as your own original contribution. This definition extends beyond simply copying text verbatim—it includes paraphrasing without citation, using someone's unique ideas or arguments without acknowledgment, and even reusing your own previously submitted work without permission (known as self-plagiarism).

The Merriam-Webster Dictionary defines plagiarism as "the act of using another person's words or ideas without giving credit to that person." Academic institutions typically expand this definition to cover various scenarios. According to Harvard University's academic integrity policies, plagiarism occurs when students fail to distinguish their own work from that of others, whether intentionally or through carelessness. This includes submitting purchased papers, copying from classmates, or presenting AI-generated content as original work.

Why Plagiarism is Considered Serious Academic Misconduct

Academic institutions treat plagiarism seriously because it undermines the fundamental principles of education and scholarship. When students plagiarize, they bypass the learning process that assignments are designed to facilitate. Writing assignments aren't simply about producing a final product—they're about developing critical thinking, research skills, and the ability to synthesize information from multiple sources while forming original arguments.

Plagiarism also represents a form of intellectual theft. Researchers, writers, and scholars invest significant time and effort into developing original ideas and conducting studies. When someone uses this work without attribution, they're essentially stealing intellectual property. In professional and academic contexts, this can damage reputations, undermine trust, and have legal consequences. Universities protect academic integrity to maintain the value and credibility of their degrees, ensuring that graduates have genuinely earned their qualifications through honest effort.

The consequences of plagiarism vary by institution and severity but typically range from failing the assignment to expulsion from the university. Many schools now record plagiarism incidents in permanent academic records, which can affect graduate school applications and future employment opportunities. Beyond institutional penalties, students who plagiarize miss crucial opportunities to develop their own analytical and writing abilities—skills that prove essential in virtually every professional field.

The 5 Types of Plagiarism Every Student Must Know

Understanding the different forms plagiarism can take helps students recognize and avoid these pitfalls in their own work. The following categories, adapted from Turnitin's plagiarism spectrum, represent the most common types encountered in academic settings.

1. Direct Plagiarism (Complete Plagiarism)

Definition: Copying text word-for-word from a source without quotation marks or citation.

This represents the most blatant form of plagiarism and is always intentional. Students engaging in direct plagiarism copy entire paragraphs, pages, or even complete papers from sources and submit them as original work. With modern plagiarism detection software, this type is easily caught and typically results in severe academic penalties.

Example: Copying three paragraphs from a Wikipedia article about climate change and pasting them directly into your essay without quotation marks or citation.

How to Avoid: Always use quotation marks when using exact wording from sources, and include proper citations. Better yet, paraphrase the information in your own words while still citing the source.

2. Self-Plagiarism

Definition: Submitting your own previously completed work or portions of past assignments for a new course without permission.

Many students don't realize that reusing their own work constitutes plagiarism. Academic assignments are designed to produce new learning outcomes, and submitting previous work circumvents this educational purpose. Additionally, when you submit work to a university, you typically grant them certain rights to that work, making unauthorized reuse problematic.

Example: Submitting a research paper about Shakespeare that you wrote for English 101 to fulfill a requirement in English 201, even though you wrote both papers yourself.

How to Avoid: Always create new work for each assignment. If you want to build upon previous research, discuss this with your instructor and obtain explicit permission. When approved, cite your previous work just as you would cite any other source.

3. Mosaic Plagiarism (Patchwriting)

Definition: Borrowing phrases, sentences, or ideas from sources and mixing them into your own work without proper citation, or making minor changes to copied text while maintaining the original structure.

This subtle form of plagiarism often occurs unintentionally when students don't fully understand how to paraphrase properly. Mosaic plagiarism involves replacing a few words with synonyms while keeping the original sentence structure intact, or weaving together uncited phrases from multiple sources. Because the plagiarized content is interspersed with original writing, students sometimes believe they've created original work.

Example: Original source states: "Climate change represents the most significant environmental challenge of our generation, requiring immediate action from governments worldwide." Your paper states: "Climate change is the biggest environmental problem of our time, needing urgent action from governments globally" without citation.

How to Avoid: When paraphrasing, completely restructure sentences and use significantly different vocabulary while maintaining the original meaning. Always cite the source, even when paraphrasing. If you find yourself keeping the same sentence structure, use a direct quote instead.

4. Accidental Plagiarism

Definition: Unintentionally failing to cite sources, misquoting, or inadequately paraphrasing due to lack of knowledge about citation requirements.

Despite being unintentional, accidental plagiarism still violates academic integrity policies and can result in penalties. This type commonly occurs when students are new to academic writing, unfamiliar with citation style requirements, or overwhelmed by research-heavy assignments. Poor note-taking practices often contribute to accidental plagiarism—when students fail to distinguish between their own ideas and information from sources in their notes, they may inadvertently present borrowed content as original.

Example: Taking notes from multiple sources without recording which information came from where, then writing your paper from these notes without being able to provide proper citations.

How to Avoid: Develop strong research and note-taking habits. Always record complete citation information when taking notes from sources. Use quotation marks in your notes when copying exact wording. When in doubt about whether something needs citation, cite it—over-citing is better than under-citing.

5. Source-Based Plagiarism

Definition: Citing incorrect sources, fabricating sources that don't exist, or misrepresenting the content of sources.

This category includes several related issues: citing a source you didn't actually consult (such as citing a primary source when you only read about it in a secondary source), inventing fictional sources to support claims, or citing sources that don't actually contain the information you attribute to them. Source-based plagiarism undermines the scholarly conversation by breaking the chain of verifiable information.

Example: Reading about a study in a news article and citing the original research paper without actually reading it, or citing a source as supporting your argument when it actually contradicts it.

How to Avoid: Only cite sources you've actually read and consulted. If you learn about a source secondhand, cite it as a secondary source using your citation style's appropriate format. Verify that sources actually support the claims you're making before citing them.

10 Proven Strategies to Avoid Plagiarism

Preventing plagiarism requires developing good academic habits and understanding proper research practices. The following strategies will help you maintain academic integrity throughout your writing process.

1. Start Your Research Early and Plan Your Time

Time pressure represents one of the primary factors leading students to plagiarize. When facing tight deadlines, students may take shortcuts like copying text without proper citation or purchasing papers online. Starting research well before the due date gives you adequate time to read sources thoroughly, take proper notes, develop original ideas, and cite sources correctly. Create a research and writing timeline that allocates specific periods for finding sources, reading and note-taking, outlining, drafting, and revising. This structured approach reduces stress and eliminates the temptation to plagiarize when time runs short.

2. Develop Effective Note-Taking Systems

Poor note-taking practices cause much accidental plagiarism. When taking research notes, clearly distinguish between direct quotes, paraphrases, and your own ideas. Use quotation marks consistently for any exact wording from sources, and record complete citation information immediately—including author, title, publication date, page numbers, and URL if applicable. Consider using different colors or formatting to visually separate quoted material from your own thoughts. Digital tools like Zotero, Mendeley, or even a simple spreadsheet can help organize sources and notes systematically, making proper citation easier during the writing process.

3. Master the Art of Paraphrasing

Effective paraphrasing involves more than swapping synonyms—it requires completely restructuring information while maintaining the original meaning. To paraphrase properly, first read the source material until you fully understand it, then set it aside and write the idea in your own words from memory. This technique forces you to process the information and express it in your natural writing voice. Compare your paraphrase to the original to ensure you've changed both vocabulary and sentence structure significantly. Remember that even well-paraphrased content requires citation because the ideas originated from someone else's work.

4. Use Direct Quotes Sparingly and Strategically

While direct quotes can strengthen arguments by providing expert testimony or particularly eloquent phrasing, overusing them suggests you haven't fully engaged with the material. Reserve direct quotes for situations where the original wording is particularly powerful, precise, or authoritative, or when paraphrasing would lose essential meaning. Generally, quotes should comprise no more than 10-15% of your paper. When you do quote, integrate the quotation smoothly into your own sentence structure, use quotation marks correctly, and provide proper citation including page numbers when applicable.

5. Understand What Constitutes Common Knowledge

Common knowledge—information widely known and appearing in multiple sources without attribution—doesn't require citation. However, determining what qualifies as common knowledge can be tricky. General facts like "Paris is the capital of France" or "water freezes at 32 degrees Fahrenheit" don't need citations. Specific statistics, research findings, unique interpretations, or information that appears in only a few sources always require citation. When uncertain whether something is common knowledge, err on the side of caution and provide a citation. This protects you from accidental plagiarism and strengthens your paper by demonstrating thorough research.

6. Learn Your Required Citation Style Thoroughly

Different academic disciplines use different citation styles—APA for social sciences, MLA for humanities, Chicago for history, IEEE for engineering. Each style has specific rules for in-text citations, reference lists, and formatting. Invest time learning the citation style required for your course by consulting official style guides, using your university's writing center resources, or leveraging citation management tools. Consistent, correct citation demonstrates academic professionalism and prevents plagiarism. Keep a citation guide handy while writing, and when encountering unusual sources like social media posts or podcasts, look up the proper citation format rather than guessing.

7. Use Plagiarism Detection Tools Before Submission

Running your paper through a plagiarism checker before submitting helps identify potential issues you can correct. Free tools like FreeAcademicTools Plagiarism Checker, Grammarly, or your institution's Turnitin access allow you to scan your work for unintentional plagiarism. These tools compare your text against billions of web pages and academic databases, highlighting passages that match existing sources. If the tool flags content, review those sections carefully—you may need to add citations, rephrase more thoroughly, or use quotation marks. Remember that plagiarism checkers aren't perfect and may flag common phrases or properly cited material, so use your judgment when reviewing results.

8. Develop Your Own Voice and Arguments

Papers that simply string together information from sources without original analysis are more susceptible to plagiarism issues and receive lower grades. Strong academic writing uses sources to support your own arguments and insights. After researching, take time to develop your unique perspective on the topic. What patterns do you notice across sources? Where do experts disagree? What implications or applications haven't been fully explored? Your paper should reflect your thinking, with sources providing evidence and context for your ideas. This approach naturally reduces plagiarism risk because you're creating genuinely original content rather than just rearranging others' words.

9. Seek Help When Confused About Citation Requirements

If you're unsure about citation requirements, paraphrasing techniques, or whether something constitutes plagiarism, ask for clarification before submitting your work. Most universities offer writing center services where tutors can review your citations and provide guidance. Professors and teaching assistants can clarify assignment-specific expectations during office hours. Librarians can help with citation style questions and research strategies. Taking advantage of these resources demonstrates academic integrity and helps you develop skills that will serve you throughout your education. Remember that asking for help with proper citation is never considered cheating—it's part of the learning process.

10. Keep All Your Research Materials and Drafts

Maintaining copies of all sources consulted, research notes, and paper drafts serves multiple purposes. If questions arise about your work's originality, you can demonstrate your research and writing process. These materials also help if you need to verify a citation or add additional references during revision. Save PDFs of online sources since web content can change or disappear. Keep multiple drafts showing how your paper evolved from initial outline to final version. This documentation protects you against false plagiarism accusations and provides a record of your intellectual development throughout the project.

Best Free Plagiarism Checkers for Students in 2026

Plagiarism detection tools help students identify potential issues before submission, but not all checkers offer the same capabilities or accuracy. After testing numerous free plagiarism checkers with various academic texts, these tools consistently provided the most reliable results for students.

1. FreeAcademicTools Plagiarism Checker - Best for Students

Pricing: Free tier (3 checks/day) | Basic: $9.99/month (unlimited checks)

FreeAcademicTools offers a comprehensive plagiarism checker specifically designed for academic writing, with no credit card required. The tool scans your text against billions of web pages and academic databases, providing a detailed similarity report that highlights matched content and identifies sources.

Key Features:

  • No registration required for free checks
  • Scans up to 5,000 words per check
  • Detailed similarity report with source links
  • Integrated with paraphrasing and citation tools
  • Privacy-focused: documents deleted after 30 days

Best For: Students who need reliable plagiarism checking without creating accounts or paying subscription fees.

2. Grammarly Plagiarism Checker - Best for All-in-One Writing

Pricing: Free (limited) | Premium: $12/month

Grammarly's plagiarism checker integrates seamlessly with its grammar and writing enhancement tools, making it convenient for students who want comprehensive writing assistance. The free version offers limited plagiarism checking, while premium provides unlimited scans against an extensive database.

Best For: Students who want combined grammar checking, style suggestions, and plagiarism detection in one platform.

3. Scribbr Plagiarism Checker - Best for Academic Papers

Pricing: Pay-per-use ($19.95 per document)

Scribbr uses the same technology as Turnitin, the plagiarism detection software used by most universities. This makes it particularly valuable for students who want to see how their paper will perform when submitted through institutional systems. The tool provides detailed similarity reports and identifies the specific sources matched.

Best For: Students working on major papers like theses or dissertations who want university-grade plagiarism detection before submission.

4. Quetext - Best Free Option with No Limits

Pricing: Free (up to 500 words) | Pro: $9.99/month

Quetext offers a generous free tier that checks up to 500 words at a time with no daily limits. The tool provides a clear similarity score and highlights matched content with color-coding. The DeepSearch technology in the pro version scans against academic databases and journals.

Best For: Students on tight budgets who need to check shorter passages or are willing to check papers in sections.

5. Copyleaks - Best for AI-Generated Content Detection

Pricing: Free trial | Paid plans from $10.99/month

Copyleaks distinguishes itself by detecting both traditional plagiarism and AI-generated content, addressing the growing concern about students using ChatGPT or similar tools inappropriately. The platform scans against web sources, academic databases, and can identify text generated by AI writing tools.

Best For: Students who want to ensure their work doesn't inadvertently contain AI-generated content that could trigger academic integrity concerns.

Citation Styles Guide: APA, MLA, and Chicago

Proper citation prevents plagiarism by giving credit to original authors and allowing readers to locate your sources. Different academic disciplines prefer specific citation styles, each with unique formatting rules. Understanding the basics of major citation styles helps you cite sources correctly regardless of your field of study.

APA Style (American Psychological Association)

Used primarily in: Psychology, Education, Social Sciences

APA style emphasizes the publication date because currency of research matters in social sciences. In-text citations include the author's last name and publication year in parentheses. When directly quoting, include the page number. The reference list at the end of your paper provides complete publication information for each source, formatted with hanging indents.

Example in-text citation: Research shows that student engagement increases with active learning strategies (Johnson, 2025).

Example reference list entry: Johnson, M. A. (2025). Active learning in higher education: Strategies and outcomes. Academic Press.

MLA Style (Modern Language Association)

Used primarily in: Literature, Languages, Humanities

MLA style focuses on authorship and page numbers since humanities scholars often analyze specific passages from texts. In-text citations include the author's last name and page number in parentheses, without a comma between them. The Works Cited page at the end lists sources alphabetically by author's last name.

Example in-text citation: Shakespeare's sonnets explore themes of time and mortality (Smith 45).

Example Works Cited entry: Smith, Robert. Understanding Shakespeare's Sonnets. Oxford UP, 2024.

Chicago Style (Chicago Manual of Style)

Used primarily in: History, some Social Sciences

Chicago style offers two documentation systems: notes-bibliography (preferred in humanities) and author-date (used in sciences). The notes-bibliography system uses footnotes or endnotes for citations, with a bibliography at the end. The author-date system resembles APA style with in-text citations and a reference list.

Example footnote (notes-bibliography): 1 Sarah Thompson, The Industrial Revolution in Britain (New York: Historical Press, 2025), 78.

Example bibliography entry: Thompson, Sarah. The Industrial Revolution in Britain. New York: Historical Press, 2025.

Pro Tip: Use Citation Generators

Free citation generators like FreeAcademicTools Citation Generator, Zotero, or EasyBib can automatically format citations in any style. Simply input source information and the tool generates properly formatted citations. However, always double-check generated citations against official style guides, as automated tools occasionally make errors with unusual source types.

Real-World Examples: Plagiarism vs. Proper Citation

Understanding the difference between plagiarism and proper citation becomes clearer through concrete examples. The following scenarios illustrate common situations students encounter and demonstrate correct approaches.

Example 1: Paraphrasing Scientific Research

Original Source: "The study found that students who engaged in regular physical activity demonstrated significantly higher academic performance, with an average GPA increase of 0.4 points compared to sedentary peers" (Martinez et al., 2025, p. 342).

❌ Plagiarized Version: Research shows that students who participate in regular physical activity show significantly better academic performance, with an average GPA increase of 0.4 points compared to inactive students.

Problem: This is mosaic plagiarism—the sentence structure remains nearly identical with only minor word substitutions, and there's no citation.

✓ Properly Paraphrased Version: Martinez and colleagues (2025) discovered a positive correlation between physical exercise and academic achievement, noting that physically active students earned GPAs approximately 0.4 points higher than their less active classmates.

Why it works: The sentence structure is completely different, vocabulary has been changed substantially, and proper citation is included.

Example 2: Using Direct Quotes

Original Source: "Artificial intelligence will fundamentally transform education by enabling personalized learning experiences that adapt to each student's unique needs and learning pace" (Chen, 2026, p. 15).

❌ Plagiarized Version: Artificial intelligence will fundamentally transform education by enabling personalized learning experiences that adapt to each student's unique needs and learning pace.

Problem: This is direct plagiarism—exact words from the source without quotation marks or citation.

✓ Properly Quoted Version: According to Chen (2026), "Artificial intelligence will fundamentally transform education by enabling personalized learning experiences that adapt to each student's unique needs and learning pace" (p. 15).

Why it works: Quotation marks indicate exact wording from the source, and complete citation information is provided.

Example 3: Combining Multiple Sources

Source 1: "Climate change poses the greatest threat to global food security" (Williams, 2025).

Source 2: "Rising temperatures will reduce crop yields by up to 30% in some regions" (Anderson, 2026).

❌ Plagiarized Version: Climate change poses the greatest threat to global food security, and rising temperatures will reduce crop yields by up to 30% in some regions.

Problem: Information from two sources is combined without any citation.

✓ Properly Cited Version: Researchers have identified climate change as a critical threat to worldwide food production (Williams, 2025), with projections suggesting that increasing temperatures could decrease agricultural yields by as much as 30% in vulnerable areas (Anderson, 2026).

Why it works: Information is paraphrased in the writer's own words, and each distinct idea is cited to its appropriate source.

Consequences of Plagiarism: What Students Need to Know

Understanding the potential consequences of plagiarism helps students appreciate why academic integrity matters and motivates them to develop proper citation habits. Penalties vary by institution and severity but can significantly impact your academic career and future opportunities.

Academic Penalties

Most universities follow a progressive discipline approach for plagiarism violations. First offenses typically result in failing the assignment, though serious cases like purchasing papers or extensive copying may lead to failing the entire course. Repeat violations often trigger more severe consequences including academic probation, suspension, or expulsion. Many institutions maintain permanent records of academic integrity violations, which appear on transcripts sent to graduate schools or employers. Some universities require students found guilty of plagiarism to complete academic integrity workshops or ethics courses before continuing their studies.

Long-Term Career Impact

Plagiarism consequences extend beyond college. Graduate programs carefully review applicants' academic records, and plagiarism violations can disqualify candidates from competitive programs. Professional licensing boards in fields like law, medicine, and education may deny licenses to applicants with academic integrity violations. In professional settings, plagiarism can result in job termination, damaged reputation, and legal action for copyright infringement. High-profile plagiarism cases have ended promising careers in journalism, academia, and politics.

Personal and Ethical Dimensions

Beyond formal penalties, plagiarism carries personal costs. Students who plagiarize miss opportunities to develop critical thinking, research, and writing skills essential for professional success. The stress of potentially being caught, guilt about dishonest behavior, and damage to self-respect can affect mental health and academic performance. Building a reputation for integrity serves students throughout their careers, while a reputation for dishonesty follows them long after graduation.

Frequently Asked Questions About Plagiarism

Is it plagiarism if I cite the source?

Not necessarily, but citation alone doesn't prevent plagiarism. If you copy text word-for-word, you must use quotation marks in addition to citing the source. If you paraphrase inadequately (keeping the same sentence structure with minor word changes), it's still plagiarism even with citation. Proper citation combined with genuine paraphrasing or quotation marks for exact wording prevents plagiarism.

Can I use my own previously submitted work?

Generally no, unless you have explicit permission from your instructor. Submitting the same work for multiple courses constitutes self-plagiarism. If you want to build on previous research, discuss this with your professor. When approved, cite your previous work just as you would cite any other source.

Do I need to cite information I found on Wikipedia?

Yes, information from Wikipedia requires citation, though many instructors prefer you cite the original sources referenced in Wikipedia articles rather than Wikipedia itself. Wikipedia serves as a useful starting point for research, but academic papers typically require more authoritative sources like peer-reviewed journals, books, and reputable news outlets.

What percentage of similarity is acceptable in plagiarism checkers?

There's no universal acceptable percentage, as it depends on your assignment type and how the matches occur. A paper with 15% similarity might be fine if matches consist of common phrases, properly quoted material, and citations. Conversely, 5% similarity could be problematic if it represents unattributed copied passages. Focus on ensuring all matched content is either properly cited, quoted, or represents common phrasing rather than targeting a specific percentage.

Can I be accused of plagiarism for using AI writing tools like ChatGPT?

Yes. Most academic institutions consider submitting AI-generated content as your own work to be a form of plagiarism or academic dishonesty. If you use AI tools to help brainstorm ideas or improve your writing, you should disclose this usage according to your institution's policies. Always ensure the final work represents your own thinking and writing, with AI serving only as a supplementary tool rather than generating content you present as original.

What should I do if I accidentally plagiarized?

If you discover plagiarism in your work before submission, correct it immediately by adding proper citations, quotation marks, or rewriting passages in your own words. If you realize the issue after submission but before grading, contact your instructor immediately, explain the situation honestly, and ask if you can submit a corrected version. Professors often appreciate students who take responsibility for mistakes and demonstrate commitment to academic integrity.

Conclusion: Building a Foundation of Academic Integrity

Avoiding plagiarism requires more than simply following rules—it demands developing habits of intellectual honesty, critical thinking, and respect for others' work. The strategies, tools, and examples provided in this guide equip you to navigate academic writing with confidence while maintaining integrity. Remember that proper citation and original thinking aren't obstacles to overcome but essential skills that will serve you throughout your academic career and professional life.

Start implementing these practices immediately in your coursework. Begin research projects early to allow adequate time for proper note-taking and citation. Use free plagiarism checkers like FreeAcademicTools to verify your work before submission. When uncertain about citation requirements, consult your instructor or writing center rather than guessing. Most importantly, approach assignments as opportunities to develop your own voice and ideas rather than simply compiling others' work.

Academic integrity forms the foundation of education and scholarship. By committing to honest, ethical academic practices, you not only protect yourself from serious consequences but also develop the critical thinking and communication skills that employers value. The effort you invest in learning proper research and citation techniques pays dividends throughout your education and career, establishing you as a trustworthy, competent professional.

Ready to Check Your Work for Plagiarism?

Use FreeAcademicTools' free plagiarism checker to scan your papers before submission. Get detailed similarity reports, identify potential issues, and ensure your work maintains academic integrity.

Last updated: February 18, 2026 | This guide is regularly updated to reflect current academic integrity standards and plagiarism detection technology.

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