1-8
: 1s & 4s set, dance up/down centre **while** 2s & 3s step up/down, 1s+4s
  circle 4H round & end facing corners
9-16
: All set, change places with corners RH & dance 1/2 double diagonal reel
  of 4 (give LH in centre), 2s & 3s (middle couples) end facing corners
17-24
: All set, change places with corners RH & dance 1/2 double diagonal reel
  of 4
25-32
: 1s & 4s dance out ends & cast to meet in centre, 1s dance under 4s arch
  & both couples dance out other end & cast to end 2 4 1 3