1-8
: 1s set, cast (2s step up); 1s cross RH to end BtoB facing opp sides &
  all set as in Double Triangles
9-16
: 2s+1s+3s dance 6 bar reels of 3 on sides (1s RSh to 1st corner to
  start). Bars 15-16 1s turn 1.1/4 RH to face out between corners
17-22
: 1s dance RSh round 1st corner, turn RH in centre to finish BtoB
  (up/down), 1M facing 3s, 1L facing 2s & all set as in Double Triangles
23-30
: 2s+1s+3s dance RSh reels of 3 across (1s pass 1st corner RSh to
  start). 1s end in 2nd place opp side
31-32
: 1s cross RH to own side.  2 1 3