Whilst looking at the structure of the Triolet it was realised that if two stanzas were added together with the two refrain lines being the link then there would be a Sonnet.

The rhyme pattern becomes A. B. a. A. a. b. A. B. a. A. a. b. A. B. It would work with the A & B lines being completely repeated or just the rhyme word repeated. The a and b are of course just standard rhyme.There is no set syllable count, although eight syllables is common with most of the French forms.