1-8
: 1s+2s+3s dance Petronella to opposite sides (6 bars without final set) &
  cross RH
9-16
: 1s+2s dance RH across, 1s cast & turn LH to face 1st
  corners **while** 2s lead up
17-24
: 1s dance 1/2 diagonal reel of 4 with 1st corners & 1/2 reel with 2nd
  corners ending BtoB facing opposite sides
25-32
: 1s dance out turning about & dance across to 2nd place **while** 2s+3s
  dance 1/2 R&L, 2s+1s+3s turn RH