Some people say it's because of the accent changes so that others understand our words. The accents are several variations on each region, it's not the same.
Some people say that the accent, because it so that other people understand our words. There are several dialects, which are spoken as individual sectors, it said.
Some of them have a change of accent to other people, because I understand that the words of our accent each semester, he said there are several formats are not the same.