1–
: 1c set R {1} dance in and cast to 2pl facing down (2c up) ; ½ G-Chain (2c cross) with polite turns (3x,1x,2x)
9–
: 1c set R turning out {1} cast below 3c, dance up to top and cast to 1diag BtoB facing 3cnr pos.
17–
: 1c set R to 3cnr {1}, ½ diag. Reel4, passing Lsh to face 4cnr pos. ; 1c set R to 4cnr {1}, ½ diag. Reel4 (to 2,1,3)
25–
: All set R {1}, circle6 L {3} ; Set L {1}, circle6 R (2,1,3)

{{explanation}}
Note:   After set R (on bars 1, 9, 17, 21) dance Sk-Change leading with L foot.