1–
: 1c+2c (leading) lead down, on [4] 1c cross ; 2c lead up to 2pl **while**{4} 1c cast to the top, and curve in to finish BtoB between 2c facing opposite side
9–24
: The Spurtle:
9–12
: 1c+2c, ½Reel4, 2c ends in 1plx (cast up) as 1c moves down with quick RH turn to face 3c in the same way
13–16
: 1c+3c repeat
17–20
: 1c+4c repeat
21–24
: 1c continue fast RH turn to 4plx (best as      a double turn) | all set (2x,3x,4x,1x)
25–
: All ½ Petronella to own side (2,3,4,1).