1–
: 1c+2c cross RH and cast off two (2c leads) ; 1c cross below 3c as 2c cross below 4c | 1c+2c cast up to places (1,2,3,4)
9–
: 3c+4c repeat upwards (1,2,3,4)
17–
: 1c+4c A&R on diagonal ; 1c cast to bottom (others step up) (2,3,4,1)
25–
: Circle8 and back