{{explanation}}
Square set, 5s in centre, 5L facing up, 5M facing down

1-8
: 1s+2+3s+4s circle 8H round & back **while** 5s set, 1/2 turn RH, set &
  1/2 turn LH to end 5L facing 1s & 5M facing 3s
9-10
: 5L+1L & 5M+3M change places RH
11-12
: 5L+1M, 5M+3L, 1L+3M turn LH
13-14
: 5L+1L & 5M+3M change places RH
15-16
: 1L+1M & 3L+3M turn LH **while** 5L+5M turn 3/4 LH to 5L facing 2L, 5M
  facing 4M
17-18
: 5L+2L & 5M+4M change places RH
19-20
: 5L+2M, 5M+4L, 1L+4M turn LH
21-22
: 5L+2M & 5M+4M change places RH
23-24
: 2s & 4s turn LH **while** 5s turn 3/4 LH to end 1M followed by 1L facing
  1s
25-32
: All couples in tandem (Man leading) change places passing RSh as
  follows: 5s+1s, 1s+4s, 4s+3s, 3s+2s

{{explanation}}
Repeat with new couple (2s) in centre