1-8
: Top 3 Ladies dance round partner RSh, dance down & round next Man LSh &
  back to places
9-16
: Men repeat passing partner LSh
17-24
: 1s & 3s petronella turn (2s * 4s step up), all 4 couples set; 1s/3s
  dance down to face 2s/4s & all set
25-32
: 1s+2s also 3s+4s dance reels of 4 across
33-40
: 1s & 3s cast to right round the facing person into centre & dance 1/2
  reel of 4 (up/down set) end passing partner LSh to own side.  2 3 4 1