he knows it by heart
he know it by heart
pro:sub v pro:per prep n
he knows it by heart .
h iː WORD_BOUNDARY n oʊ z WORD_BOUNDARY ɪ t WORD_BOUNDARY b aɪ WORD_BOUNDARY h ɑː ɹ t WORD_BOUNDARY
h e WORD_BOUNDARY k n o w s WORD_BOUNDARY i t WORD_BOUNDARY b y WORD_BOUNDARY h e a r t WORD_BOUNDARY