The poem below is constructed from the 308 first and last words from the 154 Shakespearean sonnets. Although done in a free-verse style, it is based on the 'ballad supreme' form, with three stanzas, each ending with the same refrain, followed by an 'envoy'.
"Full Many A Sonnet End-Word Have I Seen,"
Word Ways: Vol. 34
, Article 6.
Available at: http://digitalcommons.butler.edu/wordways/vol34/iss4/6