1-8
: All set NHJ, 1s &2s also 3s+4s dance RH across. 1s & 4s cast into
  centre **while** 2s & 3s step out to ends. 2 1 4 3
9-12
: 1s+4s Petronella turn and set, remaining in centre ready for ...
13-20
: 1s+4s dance 1/2 Celtic Reel:

: **13-16**  1s+4s pass partner RSh, 1M+4L dance1/4 clockwise round to opp
  sides **while** partners dance 3/4 LSh round each other to face own
  partner across dance.

: **17-20** Repeat (4M+1L dancing clockwise round) to form a line up &
  down centre, facing partner again
21-24
: 4s+1s set & petronella turn to own side. 2 4 1 3
25-32
: 2s+4s+1s+3s circle 8H round & back. End 2 4 1 3