1–
: 1c+3c pass RSh | chase &frac14; clw **while{4}** 2c & 4c set | cast &frac14; clw (4,3x,2,1x) ;
  repeat with 2c+4c passing RSh as 1c & 3c set (1x,2x,3x,4x)
9–
: Circle8 & back
17–
: W &frac12; LHA to opp M place **while{2}** M chase &frac14; cclw to next W place, ending in tandem behind P at cnrs |
  all chase &frac14; clw ;
  M &frac12; LHA to opp W place **while{2}** W chase &frac14; cclw to next M place, ending in tandem behind P on sides |
  all chase &frac14; clw (2x,3x,4x,1x)
25–
: All S&Link ; turn P LH (2,3,4,1)