1-8
: All set facing partner & petronella turn (Ladies BtoB in centre, Men
  outside facing in); all set, change places with partner RH retain
  hands & men join LH in centre
9-16
: LH across ("double wheel") 2 places round ending Men BtoB in centre
  facing partner; All set, petronella turn to face partner
17-24
: Interlocking RSh reels of 3, at end Ladies face out
25-32
: Schiehallion reels to end 2 places round anticlockwise from start,
  facing partner