The Rime Couée is a French form written over two rhymes. The first is a rhyming couplet of eight syllables then a shorter third line of six lines. The two couplets rhyme as so the shorter lines. This gives a form pattern of
xxxxxxxa
xxxxxxxa
xxxxxb
xxxxxxxa
xxxxxxxa
xxxxxb
Example
Butterfly Dance by Jez Farmer
Slowly feasting on petaled rose
Nature’s gift as the summer glows
She flutters through the pink
It’s on her wings her beauty shows
Black, white and red that nature chose
In pink she’s dark as ink
A nectar morsel here and there
For her life is short and unfair
Pollen shared, she moves on
A brief career but does she dare
For one more day of grace to share
While flitting in the sun