1-8
: 1M followed by partner casts down Men's side, crosses over at bottom,
  dances up behind Ladies & 1M dances between 2L & 3L to
  face 2M **while** 1L dances between 3L & 4L to face 3M (2s+3s+4s step
  up bars 3-4)
9-16
: 1s dance diagonal RSh reels of 3 (Man with 2M+3L & Lady with 3M+4L)
17-24
: 1s dance diagonal RSh reels of 3 (Man with 3M+2L & Lady with 4M+3L)
25-32
: 1L followed by partner dances down middle, cast up behind Ladies,
  crosses over above 3s & casts to bottom crossing to own side