1-8
: 1s+4s turn RH (birl); 1s+4s cast down/up & cross RH (2s+3s step up/down
  on bars 5-6).
9-16
: 2s+3s repeat 1-8
17-20
: 1s+2s & 3s+4s dance right RH across
21-24
: 2s+3s dance LH across, finish 2M+3M facing up, 2L+3L facing down. (1)
  (2) (3) (4)
25-28
: 2M followed by 3M dance 1/2 Tandem Reel across with 1s (LSh
  to 1L) **while** 3L followed by 2L dance 1/2 Tandem Reel across
  with 4s (LSh to 4M) to finish 1 3 2 4.
29-32
: 1s+3s & 2s+4 Set+Link.  3 1 4 2