1-8
: 1L+2M change places RH, 2L+1M change places RH, 2s+1s turn RH on sides
9-16
: Repeat with 1s ending facing 1st corners
17-24
: 1s turn 1st corner RH, partner LH, 2nd corner RH & partner LH to end in
  2nd place own side
25-32
: 2s+1s+3s Adv+Ret & turn RH into prom hold
33-40
: 2s+1s+3s Promenade