1–
: 1c+3c set advancing to midline with P on R | BiL ; 1c turn ¾ RH and cast off to 3pl **while**{4} 3c turn ¾ RH and lead to 1pl (3,2,1)
9–
: Repeat [1–8] from new positions (1,2,3)
17–
: 1c lead down the middle (2c up on [19–20]) ; and up to (2,1,3)
25–
: 2c+1c R&L