1-8
: 1s & 3s 1/2 turn & twirl to opposite sides, 1s & 3s repeat back to
  places
9-16
: 1s cast 1 place, dance round each other RSh; 1M+2s (at top) &1L+3s (at
  bottom) dance LH across
17-24
: 1s lead down middle & back to 2nd place own side
25-32
: 2s+1s dance Diamond Poussette. 2 1 3