1-8
: 1s set, cast to 2nd place, set & cast back to top
9-16
: 1s dance down (1 step) & back to top, cast 1 place, set to 1st corners &
  set to 2nd corners
17-24
: 1s lead down below 3s, cross RH, cast up on own side, dance up to top &
  cast to 2nd places
25-32
: 1s+3s dance RH across, 2s+1s dance LH across
33-40
: 2s+1s dance R&L