{{explanation}}
2 chords - on second chord 3s & 4s cross to opposite side

1-4
: 1s+4s cross RH, 1s cast off, **while** 4s cast up.
5-8
: 1s+4s turn RH 1.1/2 into prom hold. 1s facing 2M, 4s facing 3M.
9-16
: 1s+4s dance 1/2 RSh reel of 4 with their 1st corners. 1s and 4s pass LSh
  to their 2nd corners. 1s+4s dance 1/2 RSh reel of 4 with their 2nd
  corners. 1s and 4s pass RSh to finish in prom hold.

: 3L,4L,4M,2M

: 3M,1M,1L,2L
17-24
: 4L+1M dance Fig 8 round 3s, **while** 1L +4M dance Fig 8 round 2s.
25-32
: 1s+4s take prom hold. 1s and 4s pass LSh and dance 1/2 RSh diagonal reel
  with 1st corner position, pass LSh and dance 1/2 RSh diagonal reel
  with 2nd corner position to finish in prom hold.

: 2L,1L,1M,3M

: 2M,4M,4L,3L
33-40
: All circle 8H round and back.

{{explanation}}
Note 1s & 4s have changed partners.