A Couple of metropolitan areas in Rio Grande do Sul (but in the remainder of the state speakers may or may not use it in more official speech), mainly near the border with Uruguay, have a slightly different pronunciation in certain occasions (tu vieste results in being tu viesse), that's https://multipurpose-wapuula.com/userinfo.php?do=profile&action=view&name=Your_Account&com=profile&username=lydia-stagg.451692