I can tell you about a triolet using a triolet by Zebulon Huset, published in the 3rd Wednesday journal. This was included in the educational packet accompanying my chapbook.
Line one comes back seventh and fourth,
line two is how the poem will end.
Line three’s free but rhymes with one: north.
Line one comes back as seventh and fourth.
Line five’s your choice but rhymes that ‘orth’
from one and three- six rhymes two, and
line one comes back as seventh and fourth.
Line two is how the poem will end.