Swap Quatrain:
Each stanza in the poem must be a quatrain (four lines)
where the first line is reversed in the fourth line.
In addition, line 2 must rhyme with line 1,
and line 3 must rhyme with line 4 and so on,
BUT not repeat the same rhyming pattern
on subsequent stanzas.
Rhyming pattern: AABB, CCDD, and so on.
http://www.poetsworkshop.net/swapquatrain.html

