1-8
: 1s followed by 2s lead down, 2s+1s dance 1/2 R&L (in middle at bottom of
  set)
9-16
: 1s followed by 2s (on opposite sides) lead up to top, 1s+2s dance 1/2
  R&L (1L omit polite turn), 1s end facing 1st corners
17-24
: 1s dance 'Hello-Goodbye' setting ending with petronella turn to 2nd
  places
25-32
: 2s+1s dance R&L