An italian rhyme scheme used by a few poets in the Renaissance. The rhyme scheme consists of 8 lines, the first six lines rhyme

a, b, a, b, a, b,

and the last two lines rhyme a, a

Rather like a little sonnet. One of the few poets to use this rhyme scheme during the Renaissance that I know if is Aemilia Lanyer who wrote her Salve Deus Rex Judeorum using this rhyme scheme for 1800-some-odd lines. Not exactly a weekend project!

A better known poet who used this scheme long after the Renaissance would be Lord Byron