he's exercising isn't he
he's exercising isn't he ?
h iː z WORD_BOUNDARY ɛ k s ɚ s aɪ z ɪ ŋ WORD_BOUNDARY ɪ z ə n t WORD_BOUNDARY h iː WORD_BOUNDARY
h e ' s WORD_BOUNDARY e x e r c i s i n g WORD_BOUNDARY i s n ' t WORD_BOUNDARY h e WORD_BOUNDARY