a isso está difícil
a isso está difícil .
ɐ WORD_BOUNDARY i s o WORD_BOUNDARY e s t̪ a WORD_BOUNDARY d̪ i f i s i l̪ˠ WORD_BOUNDARY
a WORD_BOUNDARY i s s o WORD_BOUNDARY e s t á WORD_BOUNDARY d i f í c i l WORD_BOUNDARY . WORD_BOUNDARY