1-8
: 1s & 3s petronella turn & set twice to opposite sides **while** 2s set &
  petronella turn twice to end between 1s/3s
9-16
: 1s & 3s cross RH & cast behind 2s (passing LSh) to other end **while**
  2s set & cross RH, all dance 1/2 reel of 3 on sides (2s out & up to
  start)
17-24
: 1s dance 1/2 Fig of 8 on own sides (dance between 2s to start), dance up
  to top & cast to 2nd place (2s cast to top on bars 17-18)
25-32
: 1s dance reels of 3 across (1s giving LSh to 1st corner to start)