A Couple of metropolitan areas in Rio Grande do Sul (but in the remainder of the state speakers might or might not use it in more formal speech), generally close to the border with Uruguay, have a slightly unique pronunciation in certain situations (tu vieste results in being tu viesse), https://moz-news.com/profile.php?from=space&mod=space&com=profile&name=Your_Account&user=zelma_mcevilly-451692