1-8
: 1s turn 2H, dance down into centre of set, 1M dances LH across with 2s
  & 1L RH across with 4s
9-16
: 2s+1s+4s in prom hold dance reel of 3 across (1s give RSh to 4s to
  start)
17-24
: 1s dance out between 3s, divide & cast back to centre, turn RH & 1M
  dances out between 2s as 1L dances out between 4s, back to places
25-32
: All dance Grand Chain (1 bar per hand)

{{explanation}}
Repeat with 2s, 3s then 4s leading