1-8
: 1s+2s+3s set, circle 6H 1/2 round to left; 1L followed by 1M casts up 1
  place & dances down middle to end 1s BtoB between 2s (1L facing 2M, 1M
  facing 2L). 2s step down 7-8
9-16
: 1s+2s dance "Iso-Birl"

: **9-10** All set advancing passing LSh

: **11-12**  1s (outside) chase 1/4 round clockwise **while** 2s
  turn 3/4 2H & pull back RSh

: **13-16** Repeat 9-12 to end in original line of 4 across
17-24
: 1s+2s dance RSh reel of 4 across. 1s end joining LH facing up
25-32
: 1s lead up, cross & cast to 1st place opp sides (3s step down); All set,
  circle 6H 1/2 round to left.  2 3 1