1–
: 1c+2c & 3c+4c DblFig8, 1c & 4c cast to start (1,2,3,4)
9–12
: 1c cast to 3pl | turn BH and face down **while{4}** 3c turn BH to face up | dance up between 2c
13–16
: 1c dance between 4c | cast up to 3pl **while{4}** 3c cast off to 3pl | turn BH and face down
17–20
: 1c turn BH and face up | dance up between 2c **while{4}** 3c dance down between 4c | cast up to 3pl
21–24
: 1c cast to 3pl | turn LH to face 2cnrs **while{4}**   3c turn BH to face up | dance to top (3,2,1,4)
25–
: 1c+2cnrs Pass&Turn, 1c turning R to face 1cnr ; 1c+1cnrs Pass&Turn , finish (3,2,1,4)
33–
: All set | 3c+2c & 1c+4c RHA | 3c cast off **while{2}** 2c dance up and 1c dance down and 4c cast up (2,3,4,1)

{{explanation}}
Note: On [9–24] 1c & 3c both repeat the sequence “cast-turn-dance” for eight segments, starting at different points. Good phrasing is required on [11], [17] and [23] when 3c dances away from 3pl as 1c comes in to turn.