In the short poem "I'n Not U. I'm U-nique," by Dar Wallace, the structure of the poem features <em>4 lines, 2 couplets, 1 stanza, and 1 quatrain</em>. Any kind of writing must be organized. Poetry is organized in lines, couplets, stanzas, and quatrains. This short poem has 4 lines. 2 couplets, a couplet is a set of two lines that usually rhyme. 1 stanza, a stanza is made up of a varying number of lines, just as a paragraph is made of sentences. And 1 quatrain, a quatrain is a set of four lines that may or may not rhyme.