1-8
: 1s+2s also 3s+4s dance RH across (3 bars) & LH across (3 bars), 1s & 3s
  cast down 1 place & others move up
9-16
: 1s & 4s dance Poussette
17-24
: 2s+4s also 1s+3s 1/2 R&L, set & cross RH.  4 2 3 1
25-32
: 2s+3s circle 4H round & back
33-40
: 4s set & cast **while** 1s set & cast up, all turn RH.  2 4 1 3