Butterfly Wings

4 Couple Longways

Diff: 6

0

32 Bars

N Progression

A1	LLFB, Middles gate through nearest end
A2	Double figure of 8 (middles cross, ends cast)
B1	Cast from ends, ends meet opposite and make a single handed arch, Middles meet Neighbour, go under arch and meet opposite, with that opposite lead to nearest end
B2	All 2HT the one you've got 3/2 (ends across set, middles along line) All Partner DoSiDo (across set)

2 & 4 improper. After once through, middles and ends have swapped, (old) ends have same partner, middles have new partner.