1-8
: 1s set advancing, turn 2H & 1M presents partner to 2M & retires to
  place, 2M+1L set & turn 2H & 1L presents 2M to 2L & retires to place
9-16
: 2s set, turn 2H & 2M presents partner to 1M & retires to place, 1M+2L
  set & turn 2H & retire to place
17-24
: 1s & 2s petronella turn into centre, 3/4 turn RH to opposite sides,
  petronella turn into centre & 3/4 turn RH to dance…
25-32
: 1s+2s dance the Rondel