{{explanation}}
2 chords - 2nd chord 3s+4s cross to opp sides

1-4
: 1M+2s & 4M+3s dance 1/2 reels of 3 across (1M+2L & 4M+3L pass LSh). 1s &
  4s finish in prom hold with partner
5-8
: 1s & 4s continue 1/2 reel of 3 across in prom hold. End 1s on Men's side
  above 2M, 4s on Ladies' side below 3M
9-16
: 1s & 4s dance in (2s & 3s step up/down), 1s+4s dance 1/2 RH across;
  1s+4s dance LH across once round. 1M+4L & 4M+1L take prom hold & face
  1st corners (1st corner diagonal)
17-20
: 1M+4L & 4M+1L in prom hold dance Corner Pass+Turn with 1st corners
  (corners - 2M+3M turn RH in middle), 1s+4s take prom hold with own
  partner facing 2nd corners (2nd corner diagonal)
21-24
: 1s & 4s in prom hold dance Corner Pass+Turn with 2nd corners (1s & 4s
  pass corners LSh to start, corners turn LH). End 1s between 2s facing
  down, 4s between 3s facing up
25-32
: Lines of 4 across set, 1s+4s cross RH up/down; 4s+1s circle 4H round to
  left. End 2 4 (1) (3)