I'm not very good at throwing marbles
I not very good at throw marble
pro:sub neg adv adj prep part n
i'm not very good at throwing marbles .
aɪ m WORD_BOUNDARY n ɑː t WORD_BOUNDARY v ɛ ɹ i WORD_BOUNDARY ɡ ʊ d WORD_BOUNDARY æ t WORD_BOUNDARY θ ɹ oʊ ɪ ŋ WORD_BOUNDARY m ɑː ɹ b ə l z WORD_BOUNDARY
i ' m WORD_BOUNDARY n o t WORD_BOUNDARY v e r y WORD_BOUNDARY g o o d WORD_BOUNDARY a t WORD_BOUNDARY t h r o w i n g WORD_BOUNDARY m a r b l e s WORD_BOUNDARY