1–
: 1c+3c advance | set, turning on 2nd step to face side couples ; with new P dance out NHJ between side couple and cast back to place (1,2,3,4) 
9–
: 2c+4c repeat (1,2,3,4)
17–
: All change place with P RH | set to next person (new cnr) ; change place LH | set to next person, your new P, and face in 
25–
: New couples in 1pl+3pl ½ R&L ; new couples in 2pl+4pl repeat (All have moved 1 place, the M clw, the W cclw, and so have swapped P with couple opposite)

*repeat 3 times, swapping partners each time*