1-8
: 1s+2s set twice & turn RH
9-16
: 1s followed by 2s lead down & 2s followed by 1s lead back to top, 2s
  cast to original places
17-24
: 1s+2s dance RH across & LH back, 1s casting to 2nd places
25-32
: 2s+1s dance R&L