{{explanation}}
2s & 4s start on opp sides

1-8
: 1s cast to bottom & dance up between 3s & out behind 2s to places
9-16
: All Adv+Ret & 2s+3s dance 1/2 R&L
17-24
: All set as Men advance to partner, turn RH to end all facing clockwise
  (Men in front of partner) & chase 1/2 way
25-32
: All set as Ladies advance to opposite Man, turn LH to end facing
  anticlockwise (Ladies in front of Men) & chase 1/2 way.  3(1)4(2)