My code for the loop is (but I think I'm missing something):
set source_file ""
set source table
set repeat 1
set order sequential
set description "Repeatedly runs another item"
set cycles 30
set continuous no
set break_if_on_first yes
set break_if never
setcycle 0 handedness_option left
setcycle 0 question_text draw
setcycle 1 handedness_option right
setcycle 1 question_text draw
setcycle 2 handedness_option both
setcycle 2 question_text draw
setcycle 3 handedness_option left
setcycle 3 question_text "use a toothbrush"
setcycle 4 handedness_option right
setcycle 4 question_text "use a toothbrush"
setcycle 5 handedness_option both
setcycle 5 question_text "use a toothbrush"
setcycle 6 handedness_option left
setcycle 6 question_text "use a bottle opener"
setcycle 7 handedness_option right
setcycle 7 question_text "use a bottle opener"
setcycle 8 handedness_option both
setcycle 8 question_text "use a bottle opener"
setcycle 9 handedness_option left
setcycle 9 question_text "throw a ball far away"
setcycle 10 handedness_option right
setcycle 10 question_text "throw a ball far away"
setcycle 11 handedness_option both
setcycle 11 question_text "throw a ball far away"
setcycle 12 handedness_option left
setcycle 12 question_text "hammer a nail"
setcycle 13 handedness_option right
setcycle 13 question_text "hammer a nail"
setcycle 14 handedness_option both
setcycle 14 question_text "hammer a nail"
setcycle 15 handedness_option left
setcycle 15 question_text "hold a tennis racket to hit a ball"
setcycle 16 handedness_option right
setcycle 16 question_text "hold a tennis racket to hit a ball"
setcycle 17 handedness_option both
setcycle 17 question_text "hold a tennis racket to hit a ball"
setcycle 18 handedness_option left
setcycle 18 question_text "to cut through a rope with a knife"
setcycle 19 handedness_option right
setcycle 19 question_text "to cut through a rope with a knife"
setcycle 20 handedness_option both
setcycle 20 question_text "to cut through a rope with a knife"
setcycle 21 handedness_option left
setcycle 21 question_text "to stir with a spoon"
setcycle 22 handedness_option right
setcycle 22 question_text "to stir with a spoon"
setcycle 23 handedness_option both
setcycle 23 question_text "to stir with a spoon"
setcycle 24 handedness_option left
setcycle 24 question_text "to erase something"
setcycle 25 handedness_option right
setcycle 25 question_text "to erase something"
setcycle 26 handedness_option both
setcycle 26 question_text "to erase something"
setcycle 27 handedness_option left
setcycle 27 question_text "strike a match"
setcycle 28 handedness_option right
setcycle 28 question_text "strike a match"
setcycle 29 handedness_option both
setcycle 29 question_text "strike a match"
run trial_sequence