yo tengo barba
yo tene barba
pro:sub v n
yo tengo barba ?
i o̞ WORD_BOUNDARY t e̞ n ɡ o̞ WORD_BOUNDARY β a ɾ β a WORD_BOUNDARY
y o WORD_BOUNDARY t e n g o WORD_BOUNDARY b a r b a WORD_BOUNDARY ? WORD_BOUNDARY