1-8
: 1s cross RH, cast off (2s step up), 1s cross LH & cast to the left to
  end 1L between 2s facing down & 1M between 3s facing up
9-16
: Lines of 3 across Adv+Ret up/down, then Set+Link for 3 (2) 1 (3)
17-24
: 2s+1s+3s Adv+Ret, Set+Link for 3. 1M ends between 3s facing down & 1L
  between 2s facing up & 2s & 3s facing partners
25-28
: 1s Petronella turn to own sides and set, **while** 3s & 2s set &
  Petronella turn into centre
29-32
: 3s & 2s RSh pass partner & chase clockwise to own sides. End 2 1 3