1-8
: 1s 1/2 turn & twirl to change places, 1s cross LH down between 3s & cast
  up to 2nd place own sides
9-16
: 1s dance RH across (L up with 2s, M with 3s), 2s+1s+3s chase 1/2 way
  clockwise
17-24
: 1s dance LH across (L up with 3s, M with 2s), 3s+1s+2s chase 1/2 way
  anticlockwise
25-32
: 1s dance reels of 3 across giving LSh to 1st corners (L with 2s, M with
  3s)