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

1-8
: 2s+3s advance to form circle with hands crossed as in Auld Lang Syne &
  set, circle L (hands crossed) end 2s facing up & 3s facing down (NHJ)
9-16
: 1s & 4s cast in 1 place & 1/2 turn RH **while** 2s & 3s dance up/down &
  cast into top/bottom places, 1s dance RH across with 2L **while** 4s
  dance RH across with 3L, end 1M behind 1L facing up & 4M behind 4L
  facing down in centre of set
17-24
: 1s dance LH across with 2M **while** 4s dance LH across with 3M, 1s+4s
  dance RH across & on last step turn to right to face corners (1M
  facing 2M, 1L+2L, 4M+3M, 4L+3L)
25-32
: 'Hello-Goodbye' setting: 1s set to corners, set between corners, set to
  next corner & into centre (1s in 3rd place & 4s in 2nd place)
33-40
: All turn next corner RH onto sides, 4s+1s turn LH on side
41-48
: All reel of 4 on sides ending 2 4 (1)(3)