{{explanation}}
4s+5s+6s start on opp sides

1-8
: 1s & 6s turn RH, cast in 1 place & turn LH 1.1/2 times to end BtoB
  facing 2s/5s **while** 3s+4s dance RH across & LH back to places
9-16
: 1s+2s also 6s+5s dance reels of 4 across to end 1s/6s facing partner
  up/down (Ladies BtoB) **while** 3s+4s dance reel of 4 across (Men LSh
  & Ladies cast to start)
17-24
: 1s & 6s set, 3/4 turn into prom hold & Promenade round each other (RSh)
  to end on sides between 3s+4s (1s facing 3M & 6s facing 4M)
25-32
: 1s dance reel of 3 on sides with 3M+4L **while** 6s dance reels
  with 4M+3L (1s & 6s end in centre ready for RH across).
   2 3 6(1)(4)(5)