1-8
: 1s set twice, 1s+2s set facing & change places RH
9-16
: 2s+1s chase clockwise
17-24
: 2s+1s Adv+Ret, turn partners RH to face down
25-32
: 1s followed by 2s lead down, 2s lead up followed by 1s. 2 1 3 4