1-8
: 3s cross LH, cast up (2s step down); 3s dance up & NHJ dance round 1M
  into middle facing Ladies side (3l above 3M)
9-12
: 3L+1s dance LH across **while** 3M+2s dance RH across
13-16
: All dance Interleaving Snake Pass:

: 3L followed by 1M & 1L cross down to 3L's place, cross over & up Men's
  side **while** 3M followed by 2M &2L cross up to 1L's place, cross
  over & down Men's side - those crossing down go in front of those
  crossing up in order 3L, 3M, 1M, 2M, 1L, 2L
17-24
: Repeat  9-16 3M+2s (at top LH across) & 3L+1s (at bottom RH across) then
  Interleaving Snake Pass. 3s end in centre in prom hold (1L on 1M's
  left) facing Ladies' side
25-32
: 3s in prom hold dance 1/2 RSh reel of 3 on Ladies' side (dancing
  out/down); 3s in prom hold dance 1/2 RSh reel of 3 on Men's side
  (dancing out/up) End 2 3 1