{{explanation}}
2s & 4s start on opp sides

1-8
: 1s & 4s cast in 1 place as 2s & 3s dance up/down, 1s+4s dance RH across
  & all set
9-16
: 2s & 3s cast in 1 place as 1s & 4s dance up/down, 2s+3s dance RH across
  & all set advancing (1s & 3s face up **while** 2s & 4s face down)
17-24
: All dance 'Linked' Allemandes:

: 1s+3s dance normal Allemande to end in each others place as 2s+4s dance
  down to end in each others place. 3(4)1(2)
25-32
: All set, cross RH, 2s lead up between 1s crossing, out & up behind 4s+3s
  to top & cross RH. 2(3)4(1)