{{explanation}}
1s & 2s start on opposite sides

1-8
: 1s+2s also 3s+4s Set & Rotate, 1L & 4L end facing out
9-16
: 1s+4s dance LH across, finish 1M+4L (facing up/out Ladies' side) & 4M+1L
  (facing down/out Men's side) in prom hold; All dance 1/2 LSh reels of
  3 on the sides
17-20
: 1s+4s dance RH across, finish in prom hold with partner, 1s facing
  down/out on Ladies' side, 4s up/out Men's side **while** 3s & 2s cross
  RH and set
21-24
: All dance 1/2 RSh Reels of 3 on sides, 4s & 1s separate and face down/up
25-32
: 4s+1s turn 2H on sides **while** 2s & 3s cross RH, all set on sides; All
  circle 8H left 1/2 way (3)(1) 4 2