1-8
: 1s+2s facing diagonally in Adv+Ret 1 step twice, petronella turn to
  right 1 place & set (diagonally in)
9-16
: 1s+2s repeat bars 1- 8 to end on opposite sides 1s in 2nd place
17-24
: 2s+1s turn 2H & dance 1/2 R&L back to original places
25-32
: 1s+2s dance the Knot