1–
: 1c set | cast off two places ; dance up to top | cast off one place (2c up) to face 1cnrs (2,1,3)
9–
: “Progressive Corner Chain with Setting” [same as Corner Chain with Setting with cnrs in centre turning LH 1½]
17–
: Repeat [9–16] with 2cnrs, to 2pl facing out (3x,1,2x)
25–
: 1c loop Lsh round 4cnrs[pos] to 2pl **while{4}** 3c+2c ½ R&L ; all turn P RH (2,1,3)  

*Deviser's note:  It may be necessary for the corners to “borrow” a little in bars 9–12 and 17–20 to enable them to complete the turn 1½ on time – i.e start the left hand turn on about bar 10ish or 18ish.*