1–
: All set | turn P RH ½ and cast to opposite side | chase ¼ round clw into facing lines across (M below W)
9–
: All set | turn P RH ½ and cast to opposite line | chase ¼ round clw into (3x,2x,1x)
17–20
: 3c+2c ½ RHA as 1c turn RH ½ | All set (2,3,1)
21–32
: R&L for 3 couples (2,3,1)