1-8
: 1s dance in & touch hands, cast to 2nd place (2s step up); 1s pass LSh
  & 3/4 turn 1st corner into lines of 3 across (1L between 2s
  facing 2L, 1M between 3s facing 3M)
9-16
: 1L+2s also 1M+3s dance reels of 3 across (1s LSh to 4th corner)
17-20
: 1s turn 1.1/2 RH into lines of 3 across at other end
21-28
: 1M+2s also 1L+3s dance reels of 3 across (1s RSh to 2nd corner).  1s end
  in 2nd place own side
29-32
: 1s turn partner LH **while** 2s & 3s turn partner RH