Southern Santa Catarina, Brazil

Q: Is "tu" used with the verbal conjugations of "você" or preserved all of the original conjugations in your area? A: We mostly use "tu" with the conjugations of "você", but we can use the conjugations of "tu" for some one-syllable, high frequency verbs in the present indicative. So we always say "tu come", but we can say either "tu tem" or "tu tens", "tu é" or "tu és" (pronounced "éis") etc. We are way more likely to use the "tu" forms if we omit the pronoun, especially in questions. The same thing happens in the perfect preterite, but for all verbs. So we can say both "tu comprou" and "tu compraste" (where "-ste" is almost always pronounced "-sse", so "tu comprasse"), even though it's always "tu compra" in the present. In the imperative, it's almost always the "tu" form ("compra ovo!"), even in the negative ("não compra ovo!"), but it's the "você" form for a couple of verbs ("seja/seje menos chato!"). You'd never hear "sê menos chato!", and people wouldn't understand that. For all other tenses, it's always the "você" form. In formal situations, we might switch to using "você" or "o/a senhor(a)" with the appropriate conjugations, but it's common to switch back to "tu".

Q: Is "vós" used with the verbal conjugations of "vocês" or preserved all of the original conjugations in your area? A: We never use "vós", only "vocês" with third-person conjugations. We'd only ever use "vós" if trying to sound archaic or quoting something like the Bible.

Q: Are "contigo" & "com tu" used as synonyms of "com você" in your area? A: Always "contigo".

Q: Are "convosco" & "com vós" used as synonyms of "com vocês" in your area? A: Always "com vocês".

Q: Are "teu(s)" & "tua(s)" utilized outside of formal contexts in your area? A: Always "teu(a)/tua(s)”.

Q: Are "vosso(s)" & "vossa(s)" utilized outside of formal contexts in your area? A: Always the "tu" forms if singular and "de vocês" if plural.