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

1-8
: 1s+2s also 3s+4s circle 4H round to left, 1s+2s also 3s+4s set to each
  other on sides & 2M+3L dance out Men's side & cast to ends **while**
  2L+3M dance out Ladies side & cast to ends **while** 1s+4s dance
  down/up & out to sides. 2 1 (4)(3)
9-16
: 2s+1s also 4s+3s dance double Fig of 8 across (2s & 3s crossing down/up
  to start) & 1s+4s end with 1/2 turn RH on sides. 2 (4) 1 (3)
17-24
: All dance Grand Chain
25-32
: 4s & 1s dance out ends & cast in 1 place, 4s & 1s turn partners 1.1/2
  times 2H to end 2 4(1)(3)