Poe, however, claimed the poem was a combination of octameter acatalectic, heptameter catalectic, and tetrameter catalectic. The rhyme scheme is ABCBBB, or AA,B,CC,CB,B,B when accounting for internal rhyme. In every stanza, the "B" lines rhyme with the word "nevermore" and are catalectic, placing extra emphasis on the final syllable. The poem also makes heavy use of alliteration ("Doubting, dreaming dreams..."). Twentieth-century American poet Daniel Hoffman suggested that the poem's structure and meter is so formulaic that it is artificial, though its mesmeric quality overrides that.