1-4
: 1L+2M turn RH **while** 1M+2L chase clockwise 1/2 round to change places
5-8
: 2L+1M turn RH **while** 1L+2M chase clockwise 1/2 round to change
  places. (2) (1)
9-16
: 2s+1s circle 4H round & back
17-24
: 2s+1s chase anticlockwise 1/2 round to original places; 1s+2s change
  places on sides turning 1.1/2 LH. 2 1 3
25-32
: 2s+1s+3s dance RSh reels of 3 on sides (1s pass 3s RSh to start). 2 1 3