I started walking faster
I start walk fast
pro:sub v part adj
i started walking faster !
aɪ WORD_BOUNDARY s t ɑː ɹ ɾ ɪ d WORD_BOUNDARY w ɔː k ɪ ŋ WORD_BOUNDARY f æ s t ɚ WORD_BOUNDARY
i WORD_BOUNDARY s t a r t e d WORD_BOUNDARY w a l k i n g WORD_BOUNDARY f a s t e r WORD_BOUNDARY