1-8
: 1s cross RH & cast 1 place, cross RH & cast right (1M ends
  between 2s, 1L ends between 3s
9-12
: 1s in lines of 3 Adv+Ret (for 1 up/down) & change places RH
13-16
: All repeat bars 9-12
17-24
: 1s cross RH & cast to 2nd place own side, 1s turn RH
25-32
: 2s+1s+3s circle 6H round & back