I have a question, my friends. I often see the alternation of the у/в letters in the begining of words: уперше/вперше, уперший/вперший. And many more( Can't remember more examples right now, but reading books and using dictionaries I often see this alternation. Is this some kind of different standards, archaic/modren rule, or something else?

June 9, 2015


See Vinnfred's and mizail's comments.

There may be more comments elsewhere, I don't know.

June 9, 2015
June 9, 2015 Это, наверно вопрос мелодичности, больше.

June 19, 2015
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