{{explanation}}
2s start on opp sides

1-8
: 2s cross RH & cast (2M up, 2L down); 1/2 LSh reels of 3 across (2M+1L
  & 2L+3M pass LSh).  2s end in centre facing down/up
9-16
: 2s cross RH up/down, cast to right to 2nd place own side;  1/2 LSh reels
  of 3 on sides (2M up, 2L down). (3) 2 (1)
17-24
: All dance 8 bars (2/3rds) R&L for 3 couples (all couples now with new
  partner)
25-32
: All turn new partner RH once round & chase 1/2 way round

: Order now: Ladies' side 2L 1M 1L; Men's side 3M 3L 2M. Repeat twice more
  from new positions