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

1-8
: All set & 1s+2s also 3s+4s dance RH across once round, 1s & 4s cast in 1
  place to 2 1 (4)(3)
9-12
: 1s & 4s cross RH & cast to ends of set to meet partners in prom hold &
  dance into centre of dance
13-16
: 1s+4s dance round passing RSh & to end 1s in the middle on Men's side
  facing up & 4s in the middle on Ladies' side facing down
17-24
: All (1s & 4s in prom hold) dance RSh reels of 3 on sides
25-28
: 4s+1s dance RH across in centre once round to end 4s facing up & 1s
  facing down
29-32
: 4s & 1s lead out of ends crossing & cast in 1 place to end 2 4 (1) (3)