1-8
: 1s cross RH, lead down below 3s, cross RH & lead up to 2nd place to end
  back-to-back facing own sides
9-16
: 1s set (as Double Triangles), rotate BtoB to face 1st crnrs & dance 1/2
  diag reel of 4 end BtoB in middle (1L facing up 1M dn)
17-24
: 1s set (1L with 2s & 1M with 3s), rotate BtoB to face 2nd crnrs & dance
  1/2 reel of 4 end turning LH to face 1st crnr (pstn)
25-28
: 1s change pl with 1st corner positions & 1s set **while** 1st corners
  change places LH in centre
29-32
: 1s change places RH with corners & 1s turn LH to face 2nd corner
  positions
33-40
: 1s repeat bars 25-32 with 2nd corner positions & end turning LH to 2nd
  places