1-8
: 1s+2s+3s dance reels of 3 on opp sides, all couples cross down from 1st
  place. (1) (2) (3)
9-16
: 1s dance down , cast up round 3s into 2nd place opp sides; 2s+1s+3s
  Set+Link for 3 into lines across
17-28
: R&L for 3 couples, starting up down (diagonal crossing is on 1st corner
  diagonal)
29-32
: Set+Link for 3 to end on own sides 3 1 2