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

1-8
: 2s+3s dance RH across once round, 2s (Lady leading) dance out & cast up
  round 1st Lady **while** 3s dance out & cast down round 4th Lady
9-16
: 2s with 1st Man & 3s with 4th Man, dance RH across once round, 2s with
  1st Lady & 3s with 4th Lady, dance LH across once round
17-24
: 2s & 3s dance Tandem reels of 3 on sides (2s dance down & out on Men's
  side as 3s dance up & out Ladies side). At the end of reel 2s dance
  across top of dance ending in 1st place on own sides as 3s dance
  across bottom of dance ending in 4th place 1s end in 2nd place own
  side facing down & 4s in 3rd place opp side facing up
25-32
: 1L+4M also 1M+4L set on sides, change places RH, 1s+4s set to partners &
  cross to other side RH. 2 4(1)(3)