I think I think he walked
I think I think he walk
pro:sub v pro:sub v pro:sub v
i think i think he walked .
aɪ WORD_BOUNDARY θ ɪ ŋ k WORD_BOUNDARY aɪ WORD_BOUNDARY θ ɪ ŋ k WORD_BOUNDARY h iː WORD_BOUNDARY w ɔː k t WORD_BOUNDARY
i WORD_BOUNDARY t h i n k WORD_BOUNDARY i WORD_BOUNDARY t h i n k WORD_BOUNDARY h e WORD_BOUNDARY w a l k e d WORD_BOUNDARY