*3c & 4c start on opposite side (1,2,3x,4x)*

1–
: 1c & 4c, W leading, chase &frac12; way clw (4,2,3x,1x) ;
  4c+2c & 3c+1c RHA, end facing up/down
9–
: 4c+2c & 3c+1c set facing on sides | change pl RH (2,4,1x,3x) ;
  4c+1c turn LH on sides, W pivot to face out
17–
: 4M+1W & 4W+1M lead out nearest side, divide & cast around cnrs into centre ; 4c+1c RHA
25–
: Circle8 & back (2,4,1x,3x)