1-8
: 1s & 4s cross RH **while** 2s+3s dance 1/2 RH across, all set to
  partners; (1) (3) (2) (4) All turn 1.1/2 RH, retain partner's RH
  (backs to own sides)
9-16
: "Spiral Exchange":

: 1s+3s & 2s+4s dance RH across once round (3 bars only), then 3M
  leads 3L, 1L, 1M in chase down Men's side and anticlockwise round
  bottom to end in "U" shape at bottom in 3L/4L/4M/3M places, **while**

: 2L leads 2M, 4M, 4L up Ladies' side and anticlockwise round top to end
  in "U" shape at top (2M/1M/1L/2L places).

: 2s &1s on Men's side, 4s & 3s on Ladies' side, all facing partners, Men
  facing down, Ladies facing up
17-24
: Reels of 4 on sides, all ending on sidelines
25-32
: 2s+4s & 1s+3s circle 4H round to left 1.1/4 times (4 bars) to end (2)
  (4) (1) (3); opening out to circle 8H 1/2 round to own sides.
  End 3 1 4 2