4/5 Stress Pattern Watch
What does it do?
This poem alternates metrically between lines in iambic tetrameter and lines in iambic pentameter, a 4-5 stress pattern ending with two pentameter lines at the end of each stanza. Thus, the stress pattern in each of the nine-line stanzas is 454545455. The rhyme scheme in each stanza is similarly regular, in couplets, with the final line rhyming with the final couplet: AABBCCDDD.
In regards to what it does, I doesn't really do anything. It's just the form in which it was written.