1-4
: 1s+2s+3s set, cross RH
5-8
: 1s turn 1.1/2 RH **while** 2s+3s Set+Link 1 (3) (2)
9-16
: Stochastic formation:

: 1s dance Fig of 8 on own sides, dancing in & down to begin **while** 3s
  set & cross RH twice **while** 2s cross RH, set twice & cross RH again
  1 (3) (2)
17-20
: All set & cross RH (1) 3 2
21-24
: 2s 1.1/2 turn RH **while** 1s+3s Set+Link 3 (1) (2)
25-32
: Stochastic formation:

: 3s dance Fig of 8 on own sides, dancing in & down to begin **while** 1s
  set & cross RH twice **while** 2s cross RH, set twice & cross RH again

: 3 (1) (2)
33-40
: 3s+1s+2s circle 6H round & back

{{explanation}}
Note:	1s & 2s end 1st time through on opposite sides. At end of 2nd time through all will be on own sides, 2s & 1s changing places  
"Stochastic" is a description that refers to outcomes based upon random probability