1-4
: 1L & 3M cast & chase clockwise 1/2 way to change places **while**
  1M+2s+3L dance 1/2 Diag R&L
5-8
: 3L & 1M chase clockwise 1/2 way as 3M+2s+1L dance 1/2 Diag R&L. All end
  in original places
9-16
: 1s set advancing, cast to 2nd place & turn RH 1.1/2 times to face 1st
  corners
17-24
: 1s dance 'Hello-Goodbye' setting & into centre to end BtoB
25-32
: 1s dance LH across (1M with 2s & 1L with 3s), pass LSh to dance RH
  across with other couple