1–
: All C A&R ; 1c slips to bottom (other Cs up)
9–
: All C A&R ; 2c slips to bottom (other Cs up)
17–
: 3c+4c circle4 and back **while{8}** 5c+6c RHA ; LHA **while{8}** 1c+2c R&L
25–
: 1c+2c slip to top (other C step down one) ; 1c casts to 6pl **while{4}** other Cs RH turn

{{explanation}}
This is in fact an ECD dance