{{explanation}}
3s & 4s on opp sides

1-8
: 1s & 4s cross RH, cast in 1 place, set & 1/2 turn partner RH into prom
  hold (1s facing up & 2s down)
9-16
: 1s & 4s dance reels of 3 across giving RSh to corner & end with 1s on
  Men's side & 2s on Ladies' side
17-24
: 1s+4s dance LH across 1.1/4 times & face corner person. 1s turn corners
  RH (2bars) & 1s+4s turn LH on sides (2 bars)
25-32
: All dance reels of 4 on sides.  1L & 4L end facing out
33-40
: 4L & 1L followed by partner cast & dance down/up centre, Ladies right
  about turn (BtoB) to face & 3/4 turn partner RH to end 2 4(1)(3)