1-8
: 1s+4s Petronella turn to centre (2s & 3s step up/down) & all set; 1s+2s
  also 3s+4s dance 1/2 RH across
9-16
: 1s+4s dance 1/2 reel of 4 up/down centre; 1s & 4s turn partners 3/4 2H,
  4s cast down to 2nd place **while** 1s cast up to 3rd place. (2) (4)
  (1) (3)
17-24
: All set on sides, 2s+4s also 1s+3s dance 1/2 RH across, all set on sides
25-32
: All dance 1/2 reels of 4 on sides; all chase clockwise 1/2 round to end
  2 4 1 3