1-8
: 1s+2s also 3s+4s turn 1.1/2 times on sides (1s & 4s dance
  inwards), 1s+4s LH across 1/2 way to face corners & change pls RH with
  crnrs. (4) 2 3 (1)
9-16
: All dance Grand Chain 1/2 way (starting on sides), all dance 1/2 RSh
  reels of 4 on sides.  4 (2)(3) 1
17-24
: 4s+2s dance 1/2 R&L, 2s+4s dance LH across.  2 (4)(3) 1
25-32
: 4L+3M change places RH, 4M+3L change places RH; 3s+4s dance RH across.
   2 3 4 1