1-4
: 1M followed by 1L casts & crosses towards 2nd place opp side (2s step up
  3-4), Bar 4: 1s pull back RSh to finish BtoB in middle facing opp
  sides
5-8
: All set as in Double Triangles & change places RH with 1st corners
9-12
: 2nd corners Adv+Ret (2 bars each) on diagonal **while** 1s followed by
  1st corners dance clockwise 1/2 round. 1st corners end in opposite
  corner place **while** 1s end in middle BtoB, 1M facing up, 1L facing
  down
13-16
: All set as in Double Triangles & change places RH with 2nd corners
17-20
: 1st corners Adv+Ret (2 bars each) on diagonal **while** 1s followed by
  2nd corners dance clockwise 1/2 round. 2nd corners end in opposite
  corner place **while** 1s end in 2nd place opp side. (3) 1 (2)
21-24
: 1s turn 1.1/2 RH to 2nd place opp side. (3) (1) (2)
25-32
: 3s+1s+2s dance Set+Link for 3 couples to end 2 1 3