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

1-8
: 1s & 4s cross RH & cast in 1 place (2s & 3s step down/up); 2s+1s & 4s+3s
  dance RH across 1s & 4s end in centre - 1s facing down & 4s up
9-12
: 1s cast up as 4s cast down round nearest corner to end 1s between 2s
  facing down, 4s between 3s facing up
13-16
: All set in lines across, 1s+4s Adv, 1M+4L & 4M+1L pass RSh into line
  across, Ladies BtoB in centre (1L facing 4M, 4L facing 1M)
17-24
: 1s+4s dance RSh reel of 4 across
25-28
: 1M+4L & 4M+1L turn 3/4 RH, retain hands & join LH with 2s & 3s to
  Bal-in-Line on sides. 2(1) 4 (3)
29-32
: 1M+4L & 4M+1L turn 1.1/2 RH on sides. 2 4 (1) (3)
33-40
: All dance RSh reel of 4 on sides. 2 4 (1) (3)