I'll let you do it
I let you do it
pro:sub v pro:per v pro:per
i'll let you do it .
aɪ l WORD_BOUNDARY l ɛ t WORD_BOUNDARY j uː WORD_BOUNDARY d uː WORD_BOUNDARY ɪ t WORD_BOUNDARY
i ' l l WORD_BOUNDARY l e t WORD_BOUNDARY y o u WORD_BOUNDARY d o WORD_BOUNDARY i t WORD_BOUNDARY