{{explanation}}
1s & 3s start on opposite sides (1) 2 (3) 4

1-8
: 1s+2s & 3s+4s dance RH across & LH across back, 2M & 3M end facing in,
  2L & 3L face out on sides
9-16
: 2s+3s dance reel of 4 across, 2M+3M start passing LSh as 2L & 3L loop to
  right. 2L+3L end dancing round each other 3/4 LSh & take partner in
  prom hold, 2s facing up, 3s down
17-20
: 2s+1s dance 1/2 reel of 3 across (2s RSh to 1M in 1L's place) **while**
  3s+4s dance similar (3s RSh to 4M)
21-24
: 2s+1L+4M dance 1/2 reel of 3 on Ladies' side (2s LSh to 4M) **while**
  3s+1M+4s dance similar (3s LSh to1M).
25-32
: 2s+3s dance 1/2 Men's Chain (Ladies cast down/up to start); 4s+2s also
  3s+1s set advancing & circle 4H 1/2 round to left. (2) 4 (1) 3