1-8
: 1L leads 2M down middle to 3rd places on own sides (others step up), 1M
  leads 2L down middle to 3rd place (others step up)
9-16
: 1M picks up partner & leads up to top; 2s lead up to 2nd place as 3s
  step down
17-24
: 1s turn RH, cast & turn LH (4 bars) to face 2nd corners
25-32
: 1s set to 2nd corners, set to 1st corners & turn each other RH 1.1/2
  times to 2nd place on own sides