e baubáu e babáu
e baubáu e babáu ?
e̞ WORD_BOUNDARY β a u β a u WORD_BOUNDARY e̞ WORD_BOUNDARY β a β a u WORD_BOUNDARY
e WORD_BOUNDARY b a u b á u WORD_BOUNDARY e WORD_BOUNDARY b a b á u WORD_BOUNDARY ? WORD_BOUNDARY