{{explanation}}
2s & 4s start on opp sides

1-8
: 1M+2M also 3M+4M turn RH 1.1/2 times, 1L+2L also 3L+4L repeat
9-16
: 2s+1s also 4s+3s reel of 4 across (Men & Ladies pass RSh on sides to
  start & 2s/4s end 1st/3rd place, 1s/3s in 2nd/4th place (opp sides to
  start)
17-24
: 2s+1s+4s+3s dance reels of 4 on sides (1s+4s -middle couples- pass LSh
  to start)
25-32
: 1s set, 1s lead up crossing, cast to bottom & cross RH **while** 3s set,
  lead up crossing to top, cast to 2nd place & cross RH. 2 (3)4(1)