1-8
: 1s lead down crossing below 3s & cast up to 2nd place opposite sides,
  lead up to top crossing & cast to 2nd place own sides
9-16
: 1s petronella turn into lines across & all set, 1s dance RSh round 1st
  corners **while** 1st corner persons set & change places RH
17-24
: 1s petronella turn to opposite sides & all set, 1s dance RSh round 2nd
  corners **while** 2nd corner persons set & change places RH
25-32
: 3s+1s+2s Set+Link twice