es difícil es difícil
es difícil es difícil .
e̞ s WORD_BOUNDARY d i f i s i l WORD_BOUNDARY e̞ s WORD_BOUNDARY d i f i s i l WORD_BOUNDARY
e s WORD_BOUNDARY d i f í c i l WORD_BOUNDARY e s WORD_BOUNDARY d i f í c i l WORD_BOUNDARY . WORD_BOUNDARY