1-8
: 1s+2s also 3s+4s dance RH across & all chase clockwise 1/2 way to
  opposite sides. (4)(3)(2)(1)
9-16
: 4s+3s also 2s+1s dance reels of 4 across (4L+3M & 2L+1M passing LSh) all
  ending on sides
17-24
: 4s+3s also 2s+1s dance RH across & all chase clockwise 1/2 way to
  original places
25-32
: 1s+2s also 3s+4s Set+Link, 1s+4s (centre couples) Set+Link
33-40
: 2s+4s+1s+3s circle 8H round & back. 2 4 1 3