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