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

1-8
: 1L also 4L cast behind their own lines to other end & cross into each
  others place **while** other 6 dancers set diagonally to each other &
  change places RH, 2M also 3M cast behind their own lines to other end
  & cross into each others place **while** other 6 dancers set
  diagonally to each other & change places RH. 3(4)1(2)
9-16
: All circle 8H round & back
17-24
: 3L followed by 4M+1L+2M cast to other end of set **while** 2L followed
  1M+4L+3M cast to other end (2) 1 (4) 3, 2s+1s also 4s+3s circle 4H to
  left
25-32
: 2s+1s also 4s+3s dance RH across for 3 bars, LH back & end couples (2s &
  3s) cast in 1 place **while** 1s & 4s cross to end places
33-40
: 1s+2s also 3s+4s turn on sides nearer hand (centre cpl between outer
  cpls), 1s+2s also 3+4s dance 1/2 double Fig of 8 (1s & 4s casting to
  start)
41-48
: All dance interlocking Allemandes-

: 1s & 2s dance normal Allemande but end in 3rd/1st places **while** 3s+4s
  Allemande (down) up to 4th/2nd places to end 2(4)1(3)