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

1-8
: 1s & 4s set, cast in 1 place & dance RH across ending in prom hold
  facing 1st corner pstns
9-16
: 1s+4s dance 1/2 reel of 4 with 1st corners then 2nd corners
17-24
: 1s+4s dance 1/2 reel of 4 with 3rd corners then 4th corners & pass RSh
  to end on sides.  2 4(1)(3)
25-32
: 2s+4s also 1s+3s dance Diamond Poussette