{{explanation}}
      	1s & 3s stand as for a normal square set. 2L stands in 2nd couples place & 2M stands in 4th couples place

1-4
: 2s set & cast anticl'wise to end 2L in 1st place & 2M in 3rd
  pl **while** 1s & 3s dance RH across ending in centre facing 2L/2M
  (now in 1st/3rd pls)
5-8
: 2L+1s also 2M+3s dance LH across
9-12
: 2L+1s dance 1/2 reel of 3 (2L RSh to 1L) **while** 2M+3s dance 1/2 reel
  of 3 (2M RSh to 3L)
13-16
: 2s turn RH to end facing up (Lady facing lady, Man facing man) to
  1s **while** 1s & 3s turn partner RH to finish in partner's original
  place
17-20
: 1s+2s dance 1/2 R&L (1s end facing 3s)
21-24
: 1s+3s dance 1/2 R&L (1s end in 3rd place, 3L in 2nd place & 3M in 4th
  place)
25-32
: All circle 6H round & back