1-8
: 1s+2s dance the Knot
9-16
: 3s followed by 1s+2s lead down middle, 2s+1+3s lead back up. 1s finish
  facing 1st corners
17-32
: Corner Chain

: **17-24** 1s change pl RH with 1st crnrs, 1st crnrs turn LH in centre &
  return to places giving RH to 1s who turn LH in centre to face 2nd
  crnrs

: **25-32** 1s change places RH with 2nd crnrs, 2nd crnrs turn LH in
  centre & return to places giving RH to 1s who turn LH in centre