1-8
: 1s & 4s cross RH, cast in 1 place & dance LH across to end facing
  corners
9-16
: 1s & 4s change places with corners RH, 2s+3s dance LH across **while**
  1s+4s chase clockwise 1/2 way & all set. 4 2 3 1
17-24
: 4s+2s also 3s+1s turn 2H on sides into 4H round to left & turn partners
  2H in centre ready for...
25-32
: 4s+2s also 3s+1s dance 1/2 Diamond Poussette, 4s+1s dance out ends &
  cast to places. 2 4 1 3