{{explanation}}
3c & 4c start on opposite sides (1,2,3x,4x)

1–
: 1c+4c ½ Fig8 round next cpl ; 1c+2c & 3c+4c turn each other EH on the sides, finishing 1c facing 4c in the middle (1x,2,3x,4)
9–
: 1c+4c set advancing **as** 2c+3c cast to own end | 1c+4c petronella in tandem ; set | petronella in tandem (2,4x,1,3x)
17–
: 4c+1c S&Link with P, the W pivoting R into ; 2c+4c & 1c+3c RHA (2,4,1x,3x)
25–
: Reels4 on the sides (2,4,1x,3x)