I don't know about this
i don't know about this .
aɪ WORD_BOUNDARY d oʊ n t WORD_BOUNDARY n oʊ WORD_BOUNDARY ʌ b aʊ t WORD_BOUNDARY ð ɪ s WORD_BOUNDARY
i WORD_BOUNDARY d o n ' t WORD_BOUNDARY k n o w WORD_BOUNDARY a b o u t WORD_BOUNDARY t h i s WORD_BOUNDARY