1–
: 1W, 1M following, casts behind W line and up between 3c, 1W casts up behind 2W and 1M behind 2M, to (1,2,3)
9–
: 1M+3W change places RH | 1W+3M repeat ; 2c+1c ½ R&L, 1c finish facing 3cnr position (3x,1,2x)
17–
: 2cnrs A&R diagonally **while{4}** 1c with 1cnr person on R in promhold chase cclw behind them into lines across (2M+1W+3M facing 2W+1M+3W) ; set | 1c turn LH to face 4cnr position
25–
: Repeat [17–20], 1c with 2cnr persons, finish (2,1x,3) ; set | 1c cross LH (2,1,3)