1-8
: Each trio dance reels of 3 (Man RSh to Lady on right)
9-16
: All Men dance RH across & LH back **while** corner Ladies turn RH & LH
17-24
: All set, Men petronella turn left into centre to face out between
  Partner & her corner Lady, all set, Men petronella turn into next Mans
  pl to left
25-32
: All LH Ladies followed by RH Lady (who first casts) dance across
  (touching RH) & out opposite corner, round Man on right back into
  centre & out opposite corner, LH Lady dancing round Man on right (own
  partner) to new places All 1 place on clockwise