1-8
: 1s cast, turn 2H to make an arch facing 2L & dance into 1L place as 2L
  dances under arch, 1s turn 2H to face 2L+3M who have turned 2H to face
  them (Ladies on Men's left)
9-16
: 2L+3M make an arch & change places with 1s, both couples turn 2H to face
  across (to 2M/3L), dancing couples make arches & change places with
  2M/3L, 2M+3L meet in centre & all 3 couples turn 2H into prom hold
17-24
: All 3 couples dance a diagonal reel of 3 in prom hold & end all facing
  up
25-32
: All 3 couples Promenade & end 3M casting to 2nd place as 2M dances up to
  top place. 2 3 1