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

1-8
: 1s+4s dance interlocking Figs of 8 on sides (1s in/down, 4s in/up to
  start)
9-16
: 2s & 3s dance Figs of 8 across crossing between 1s/4s to start
17-24
: 1s+2s also 3s+4s dance 1/2 R&L, 1s+4s dance 1/2 R&L. (2)(4)1 3
25-32
: All circle 8H round & back

: Note: 1st & 3rd time through 3rd & 4th couples start on opp sides; 2nd &
  4th time through 1st & 2nd couples start on opp sides