{{explanation}}
3s & 4s start on opposite sides

1-8
: 1s & 4s set, cast in 1 place (2s/3s step up/down); 1s+4s dance RH across
  1.1/2 round to end 1M followed by 4L facing 3M & 4M followed by 1L
  facing 2M
9-16
: Tandem RSh reels of 3 on sides; ending with line of 4 across, 1M+4M BtoB
  (1M facing Men's side, 4M facing Ladies' side), Ladies facing partners
17-20
: 1s+4s dance 1/2 RSh reel of 4 across
21-24
: 1L dances across to 3rd place Men's side, 4L across to 2nd place Ladies'
  side **while**

: 1M dances down to 3rd place Ladies' side, 4M dances up to 2nd place
  Men's side & All set. 2 4 (1) (3)
25-32
: All dance DoSiDo with partner; 2s+4s & 1s+3s circle 4H round to left