1-8
: 1s+3s dance Petronella to opposite side (Petronella turn & set, repeat)
9-16
: 1s+2s+3s Adv+Ret, 1s+3s cross RH to own sides, 1s+2s+3s set
17-24
: 1s lead down to bottom & up to 1L between 2s & 1M between 3s facing 1st
  corners
25-32
: 1s dance reels of 3 across giving RSh to 1st corner & turn 3/4 LH to 2nd
  place own side