I don't know is it
i don't know is it ?
aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY ɪ z WORD_BOUNDARY ɪ t WORD_BOUNDARY
i WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY i s WORD_BOUNDARY i t WORD_BOUNDARY