Hello, I'm an expert in the field of literature and poetry. Let's delve into the various structures of poems, which have been a significant part of human expression for centuries.

Poetry is an art form that uses language to evoke emotion and convey profound feelings, thoughts, and ideas. The structure of a poem can greatly influence its impact and the way it is interpreted by readers. Here are some of the most recognized forms of poetry:

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1. Sonnet
The sonnet is a highly structured form of poetry with 14 lines, typically written in iambic pentameter. It is known for its complex rhyme schemes, which can vary. The Shakespearean sonnet follows the rhyme scheme ABABCDCDEFEFGG, while the Petrarchan sonnet uses a different pattern: ABBAABBACDCDCD.

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2. Limerick
The limerick is a humorous poem consisting of five lines with a strict AABBA rhyme scheme. It often uses anapestic meter, which means two short syllables followed by a long one. Limericks are known for their wit and often bawdy or lighthearted content.

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3. Haiku
The haiku is a traditional Japanese form consisting of three lines with a 5-7-5 syllable count. It is a reflection of nature or the moment, often capturing a specific season or a fleeting emotion. Haiku are minimalistic, yet they strive to encapsulate a profound observation or experience.

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4. Villanelle
The villanelle is a 19-line poem with a specific pattern of repeated lines and a strict rhyme scheme. It consists of five tercets (three-line stanzas) followed by a final quatrain (four-line stanza). The first and third lines of the first tercet are repeated alternately at the end of each subsequent stanza and come together at the end of the poem.

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5. Sestina
The sestina is a complex form with six stanzas of six lines each, followed by a three-line envoy. It features the use of six end-words that repeat in a specific pattern throughout the poem.

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6. Cinquain
The cinquain is a short form of poetry consisting of five lines. It has a specific syllable pattern that varies depending on the type: 2-4-6-8-2, or it can be written with no syllable pattern but with a pattern of two-line rhymes.

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Tanka
The tanka is another form of Japanese poetry, similar to the haiku but slightly longer, with five lines totaling 31 syllables in a 5-7-5-7-7 pattern.

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Free Verse
In contrast to the structured forms, free verse poetry doesn't adhere to any specific rhyme or meter. It is characterized by its flexibility and can take on any form the poet chooses.

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Blank Verse
Blank verse is written in unrhymed iambic pentameter. It is often used in dramatic works and soliloquies, allowing for a natural flow of speech.

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Ottava Rima
The ottava rima is an eight-line stanza with a rhyme scheme of ABABCCDD. It is often used in longer narrative poems.

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1. Spenserian Sonnet
The Spenserian sonnet is a variation of the sonnet that features three quatrains and a final couplet, with a unique rhyme scheme that often follows the pattern ABAB BCBC CDCD EE.

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2. Ballad
A ballad is a narrative poem that tells a story, often with a repeated refrain. It typically has a simple structure and can be written in a variety of stanza forms.

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3. Couplet
A couplet is the most basic form of poetry, consisting of two lines that usually rhyme with each other.

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4. Tercet
A tercet is a three-line stanza, which can be found in various forms of poetry, including the villanelle and the sestina.

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5. Ode
An ode is a lyrical poem that typically expresses deep, often serious, emotions. It can be irregular in form or follow a specific structure.

Each of these forms has its own unique characteristics and serves different purposes in expressing the poet's thoughts and emotions. Poets often choose a form based on the content they wish to convey and the effect they want to create on the reader.

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Poetry Forms - Definitions and ExamplesSonnet - a short rhyming poem with 14 lines.Limerick - a five-line witty poem with a distinctive rhythm.Haiku - This ancient form of poem writing is renowned for its small size as well as the precise punctuation and syllables needed on its three lines.More items...read more >>