1-8
: 1s dance in, cast down below 3s, meet & dance up to 2nd place BtoB
  facing out on own sides
9-16
: 1s dance Double Triangles with 2s+3s
17-24
: 1s turn RH & LH (slow turns)
25-32
: 1L dances RH across with 2s & 1M with 3s, pass RSh & dance LH across
  with other couple