then when you don't know
then when you do know
adv:tem conj pro:per mod v
then when you don't know .
ð ɛ n WORD_BOUNDARY w ɛ n WORD_BOUNDARY j uː WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY
t h e n WORD_BOUNDARY w h e n WORD_BOUNDARY y o u WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY