I've never heard of them
I never hear of them
pro:sub adv part prep pro:obj
i've never heard of them .
aɪ v WORD_BOUNDARY n ɛ v ɚ WORD_BOUNDARY h ɜː d WORD_BOUNDARY ʌ v WORD_BOUNDARY ð ɛ m WORD_BOUNDARY
i ' v e WORD_BOUNDARY n e v e r WORD_BOUNDARY h e a r d WORD_BOUNDARY o f WORD_BOUNDARY t h e m WORD_BOUNDARY