he was keeping track
he be keep track
pro:sub aux part n
he was keeping track .
h iː WORD_BOUNDARY w ʌ z WORD_BOUNDARY k iː p ɪ ŋ WORD_BOUNDARY t ɹ æ k WORD_BOUNDARY
h e WORD_BOUNDARY w a s WORD_BOUNDARY k e e p i n g WORD_BOUNDARY t r a c k WORD_BOUNDARY