{{explanation}}
2 chords - 2nd chord 3s & 4s cross to opposite sides

1-8
: 1s & 4s set, cross RH & repeat **while** 2s+3s circle 4H round & back &
  finish in promenade hold, 2s facing 1L & 3s facing 4L
9-12
: 2s+3s dance 1/2 diagonal RSh reel with 1L & 4L, 2s+3s pass LSh (2s
  face 1M & 3s face 4M)
13-16
: 2s+3s in promenade hold dance 1/2 diagonal RSh reel with 1M & 4M to
  finish 2s in 2nd place on opposite sides & 3s in 3rd place.  4 (2) 3
  (1)
17-20
: 2s+3s set & cross RH.  4 2 (3) (1)
21-24
: All turn RH for 4 bars into Allemande hold to end 4s+2s facing up
  & 3s+1s facing down.  4 2 (3) (1)
25-32
: 4s+2s dance Allemande **while** 3s+1s dance an inverse Allemande (to
  bottom) to finish 2 4 (1) (3)