1-8
: 1s set, turn 3/4 RH (2s step up 3-4); 1s+2s dance 1/2 RH across. 1L+3s
  dance 1/2 LH across **while** 1M continues to dance another 1/2 RH
  across with 2s
9-12
: 1s+3s dance 1/2 LH across. 1s end in centre between 3s facing each other
  (1M above 1L), 1L retires (2 PdeB steps) as 1M advances (2 PdeB steps)
13-16
: 1s turn 3/4 LH to own side 2nd place, All 3 couples set