1-8
: 1s+2s dance RH across & 3s+4s dance LH across, 1L also 3M (followed by
  their partners) chase clockwise to change ends
9-16
: 3s+2s dance RH across & 1s+4s dance LH across, 1s & 3s chase 1/2 way to
  end in line up/down centre with 1L & 3M facing in middle
17-24
: 1s+3s dance reel of 4 with 1L+3M passing LSh ending in original places
25-32
: 1s cast to 4th place as others step up, 2s & 3s turn RH as 4s & 1s turn
  LH