1-8
: 1L+2L also 3M+4M Adv+Ret for 2 steps, pass partner by LSh & cast to left
  (to change places)
9-16
: 1M+2M also 3L+4L Adv+Ret, pass opposite dancer by RSh & cast to right
  (all opposite partners in order 3 4 1 2)
17-24
: All set, all circle 8H round to left 1/2 way & set
25-32
: 1s+4s+3s (bottom 3 couples) turn RH & dance up between 2s & cast to
  end 2 3 4 1