• The Trio, is an invented form that I found at Poetry Base, attributed to Sol Magazine. It is a nonce triplet, meaning the form was created for a particular poem. No articles or punctuation are used and the poem has as few words as possible. The only example given is a classic triplet. This seems more like a word exercise to me than poetry. This is very similar to the Brevette.
The Trio is:
○ a classic triplet, 3 mono-rhymed lines. However I think it would be just fine to break ranks and write an unrhymed tercet as long as the progression was clever.
○ written in as few words as possible with no articles or punctuation.
Pasted from http://www.poetrymagnumopus.com/index.php?showtopic=1197#trio
My thanks to Judi Van Gorder for years of work on this fine PMO resource.