I cannot understand you
I can understand you
pro:sub mod v pro:per
i cannot understand you.
aɪ WORD_BOUNDARY k æ n ɑ t WORD_BOUNDARY ʌ n d ə ɹ s t æ n d WORD_BOUNDARY j uː WORD_BOUNDARY
i WORD_BOUNDARY c a n n o t WORD_BOUNDARY u n d e r s t a n d WORD_BOUNDARY y o u . WORD_BOUNDARY