1-8
: 1s cross RH, cast (2s step up); 1s Petronella turn, pass RSh
  up/down **while** 2s+3s chase clockwise 1 place into lines of 3 across
  & set, pulling back RSh to face up/down
9-12
: Lines of 3 Adv (2 steps), 1s pull back RSh to face 1M down/1L
  up **while** 2s+3s turn inwards to reform lines across & all Adv (2
  steps)
13-16
: 1s pass RSh down/up **while** 2s+3s set, 3M & 2L pull back RSh & all
  chase clockwise 1 place round to sides. (3) (1) (2)
17-24
: Set+Link for 3 twice
25-32
: 2s+1s+3s dance reels of 3 on own sides, 1s pass 3rd corner LSh to start
  (1M up, 1L down). End 2 1 3