1-8
: 1s+2s Mirror Set+Link.(1s cast, 2s dance up); 1s dance down below 3s &
  cast up to 2nd place own sides. 2 1 3
9-16
: 1s turn 1.1/4 LH; 1s dance 1/2 RH across (1L with 2s, 1M with 3s). 1s
  cast round 4th corners to 2nd place own sides
17-24
: 1s dance 1/2 diagonal R&L with 1st corners (Man down, Lady up). 1s dance
  1/2 diagonal R&L with 2nd corners (Man down, Lady up)
25-32
: 1s dance LH across (1M with 3s, 1L with 2s) flowing into "Snake Pass":

: 1M followed by 3s also 1L followed by 2s pass RSh diagonally across
  through 2nd place to change ends, loop round to right to end 2nd place
  2 1 3