Two invented sonnet forms were found in Pathways for a Poet by Viola Berg 1977. This book was written for teachers with contributions by teachers. The various forms were offered as learning exercises.
• The LuVailean Sonnet alternates pentameter and dimeter lines and finishes with a heroic couplet. It invented by Lyra LuVaile.
The LuVailean Sonnet is:
○ a quatorzain made up of 7 couplets.
○ metered, iambic – 6 couplets of alternating pentameter and dimeter lines and ending with a heroic couplet (rhymed iambic pentameter).
○ rhymed, rhyme scheme ababcdcdefefgg.
Pasted from http://www.poetrymagnumopus.com/index.php?showtopic=1849#lu
My thanks to Judi Van Gorder for years of work on this fine PMO resource.