1-4
: 1s dance in & cast to 2nd place **while** 2s set & dance up & curve
  outwards to face down
5-8
: 1s dance in & up, turn 2s (1L RH, 1M LH). 1s finish facing 1st corners
9-24
: 1s dance Corner Chain (modified ending) with 1st & 2nd corners :

: 1s change pl RH with 1st crnrs, 1st crnrs turn LH in centre & return to
  places giving RH to 1s who turn LH in centre to face 2nd crnrs

: 1s change places RH with 2nd crnrs, 2nd crnrs turn LH in centre & return
  to places giving RH to 1s & 1s end turning LH to 2nd place opposite
  sides facing 2nd corners
25-32
: 1s dance LSh reel of 3 on the opposite side. On bar 30, 1s cross
  diagonally from the end of the set back to 2nd place own
  sides **while** 2s+3s finish the reel