1-8
: 1s followed by 2s, 3s & 4s lead down, cross and dance up to partners
  original place.
9-16
: 1s+3s petronella and set. 1s+3s petronella to own side and set.
17-20
: 1s+2s dance 1/2 R&L
21-24
: 1M+3L set and link, **while** 1L+3M set and link.
25-28
: 1s+4s set and dance RH across 1/2 way.
29-32
: 1s set and turn 2H.