estaban en la casa vieja
estaban en la casa vieja .
e̞ s t a β a n WORD_BOUNDARY e̞ n WORD_BOUNDARY l a WORD_BOUNDARY k a s a WORD_BOUNDARY β j e̞ x a WORD_BOUNDARY
e s t a b a n WORD_BOUNDARY e n WORD_BOUNDARY l a WORD_BOUNDARY c a s a WORD_BOUNDARY v i e j a WORD_BOUNDARY . WORD_BOUNDARY