B es B por fin o A
b es b por fin o a ?
b e WORD_BOUNDARY e s WORD_BOUNDARY β e WORD_BOUNDARY p o ɾ WORD_BOUNDARY f i n WORD_BOUNDARY o WORD_BOUNDARY a WORD_BOUNDARY
b WORD_BOUNDARY e s WORD_BOUNDARY b WORD_BOUNDARY p o r WORD_BOUNDARY f i n WORD_BOUNDARY o WORD_BOUNDARY a WORD_BOUNDARY