mm qué es difícil no
mm qué es difícil no ?
m m WORD_BOUNDARY k e̞ WORD_BOUNDARY e̞ s WORD_BOUNDARY d i f i s i l WORD_BOUNDARY n o̞ WORD_BOUNDARY
m m WORD_BOUNDARY q u é WORD_BOUNDARY e s WORD_BOUNDARY d i f í c i l WORD_BOUNDARY n o WORD_BOUNDARY ? WORD_BOUNDARY