*Dancers 1,2,3,4 in a line, 1 & 2 facing down, 3 & 4 facing up*

1–
: Dancers 1 & 3 set | petronella ; repeat to change places (3,2,1,4)
9–
: Dancers 2 & 1 set | petronella to form diamond ; 2+1 dance BtoB
17–
: *R&L in Diamond:* Dancers 2+1 change pl RH | 3+1 & 2+4 change pl LH ;
  3+4 change pl RH | 1+4 & 3+2 change pl LH (all are now opposite places at [17])
25–
: Dancers 1+2 turn 1&frac12; RH ; 1 dances to bottom **while{2}** 2 dances to top
  **while{2}** 4+3 &frac12; turn LH & give RH to 1 & 2 | 2+3+4+1 BiL (2,3,4,1)