{{explanation}}
3s & 4s start on opp sides

1-8
: 1s+2s also 3s+4s Set & Rotate :

: Set, rotate singly & dance on 1 place clockwise, change places RH on
  sides & dance on 1 place to own sides (1s in 2nd pl)
9-16
: 1s & 4s dance out ends, cast back to 2nd/3rd places, 1M+4L & 1L+4M in
  prom hold dance round (Men LSh to LSh) 3/4 to face up/down
17-24
: 1M+4L dance LSh reel of 3 across with 2s & 1L+4M with 3s to end 2 4
  (1)(3)
25-32
: All circle 8H round & back