old enough to know how to smile
old enough to know how to smile .
oʊ l d WORD_BOUNDARY ɪ n ʌ f WORD_BOUNDARY t ə WORD_BOUNDARY n oʊ WORD_BOUNDARY h aʊ WORD_BOUNDARY t ə WORD_BOUNDARY s m aɪ l WORD_BOUNDARY
o l d WORD_BOUNDARY e n o u g h WORD_BOUNDARY t o WORD_BOUNDARY k n o w WORD_BOUNDARY h o w WORD_BOUNDARY t o WORD_BOUNDARY s m i l e WORD_BOUNDARY