1–
: 1W+2W and 1M+2M set and change places RH ; repeat changing back LH
9–
: 1c lead down the middle {3} and up {3} ; cross and cast to 2plx (2c up) (2,1x)
17–
: 2c+1c ½ R&L ; ½ L-Chain (1c now on M side)
25–
: 1c+2c ½ M-Chain (2,1x) ; 2c turn RH **while{4}** 1c turn RH 1½ (2,1)