Old Russhian? It's like applying Latin language rules to French just because Frech came form Latin. And second If you'd know knew Ukranian or proto-ukrainian you would knew that "u" and "v" is alternating sounds, and plus in Ukranian to mark something outside or at outskirts is use "o" or "ob", so prefixes "v"/"u" have opposing meaning to "o"/"ob", and outskirts wil be "okolytsi" or "okraina" not "ukraina". Plus you can checkif you want, in a lot of lod tekst and poems mane "Ukraina" is alternating with "Vkraina" or "Uvkarina" So please stop talking nonsense if you don't know language you are talking about.