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

1-8
: 1M+2L & 3L+4M change pl RH as others set, 1L+2M & 3M+4L change pl RH as
  others set, 1s+2s & 3s+4s dance RH across 1/2 way & all set
9-16
: 1s & 4s cross RH & cast in 1 place, 1s+4s dance 1/2 R&L All Ladies omit
  polite turns to end facing out
17-24
: All dance RSh reels of 4 on sides
25-32
: 2s+4s also 1s+3s circle 4H round to left, 4s & 1s dance 1/2 Figs of 8 to
  end 2 4 (1) (3)