{{explanation}}
Start (1,2,3x,4x) 

1–
: 1c & 4c cross (quick RH) towards centre, dance out between 2c and 3c (give quick LH), and cast to opposite end (4,2,3x,1x) ; repeat to (1,2,3x,4x)
9–
: 2c+3c pass RH on sides, cast behind end couple and cross LH ; cast inwards | ½ RHA and face out (1,2,3x,4x)
17–
: 2c+3c cast to own end and stand **while**{8} 1c+4 turn RH moving inwards to meet ; ½  RHA | turn P RH ¾ to line of 4 on midline (the M BtoB in the middle)
25–
: 4c+1c ½ Reel4 on midline : continue into chase clw inside the set to (2,4,1x,3x)
33–
: All set | set adv. ; set, the W turning under the M's arm | turn P RH into
41–
: Circle8{3}, swivel R foot over L ; Circle8 back (2,4,1x,3x)