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

1-8
: 1s+2s & 3s+4s circle 4H round to Left to end in middle, 1s facing 2s, 3s
  facing 4s. All set, 1s+4s turn inwards towards partner & cast in 1 pl
  down/up (2s dance up, 3s dance down one pl) & 1M+4L also 1L+4M change
  places LH on sides  2 (4) 1 (3)
9-12
: 1s+4s lead out of ends, cross & cast. 1s+4s change places LH on sides.
13-16
: 1s & 4s repeat 9-12, leading out other end, cross & cast & 1s+4s change
  places LH on side. 1s face down, 4s face up
17-24
: All dance reels of 4 on sides & end facing same person as at start of
  reel.  2 (4) 1 (3)
25-32
: 2s+4s also 1s+3s set facing on sides, 1s & 4s turn end couples (dancing
  between ends) & dance 1/2 Figs of 8 round end couples to end 2 4 (1)
  (3)