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

1-8
: 1s & 4s set & cast 1 place, turn LH 1.1/2 times to end facing Ladies
  corner (1M behind partner facing 2M & 4M behind 4Lfacing 3M)
9-16
: 1s & 4s dance 1/2 Alternating Tandem RSh reel of 4 with 2M+3M; dancing
  couples pass LSh & dance 1/2 Alternating Tandem RSh 1/2 reel of 4
  with 2nd corners
17-24
: 1s & 4s repeat 1/2 Alternating Tandem reels with 3rd & 4th corners & end
  in 2nd/3rd places opp sides. 2 (1) 4 (3)
25-32
: 1s & 4s 1/2 turn partners RH into RH across 1/2 way;  2s+4s also 1s+3s
  LH across once round.  2 4 (1) (3)