{{explanation}}
4s & 5s & 6s start on opp sides

1-8
: 1L+2L+3L+4M dance RSh reel of 4 on sides **while** 3M+4L+5L+6L also
  dance RSh reels of 4
9-16
: 1M+2M+3M+4L dance RSh reels of 4 **while** 3L+4M+5M+6M also dance reel
  of 4
17-24
: All dance Double Snowball for 6 cpls to end 3(2)6(1)5(4) :

: 1s & 6s cross RH & change places LH on side with 2s/5s

: 2s & 5s cross RH **while** 1s+3s also 4s+6s change places RH

: 2s+3s also 1s+6s also 4s+5s change places LH.  3(2)6(1)5(4)
25-32
: End couples (3s & 4s) set to partners & cross RH; end 2 couples (3s+2s
  also 5s+4s) set to partners & dance 1/2 RH across  2 3 6(1)(4)(5)