1–
: 1c set | cast off (2c up) ; 2c+1W & 1M+3c RHA,
  2M & 3W turn inwards & join NH with 1W & 1M facing cclw, 2W & 3M face clw
9–
: 1W+2M & 1M+3W chase &frac12; way cclw making arches
  as 2W & 3M chase &frac12; way clw under both arches ;
  1M+3W+2W & 1W+3M+2M RHA on M/W sides,
  3M & 2W turn inwards & join NH with 1W & 1M facing cclw, 3W & 2M face clw
17–
: Repeat [9-12] ; 1c turn 1&frac34; LH to face 1cnrs
25–
: Turn CPCP (2,1,3)