1-8
: 2s & 4s dance 1/2 Petronella figure to opposite sides (petronella turn &
  set, twice)
9-16
: 1s+2s & 3s+4s dance Ladies' Chain
17-24
: 1s & 3s dance 1/2 Petronella figure to opposite sides (petronella turn &
  set, twice)
25-32
: 1s "zig-zag" to 4th place, 1L starting changing places diagonally LH
  with 2M:

: 1L+2M change places LH, 1M+2L also 1L+3L change places RH, 1M+3M
  also 1L+4M change places LH & 1M+4L change RH