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Don't mind TATY, he gets his panties into a twist pretty easily, I've noticed. :D

There are a lot of endings that are mostly Ukrainian besides -enko. But plenty of Ukrainians have endings like -ov and -in just like Russians.

In the case of last names you have to be careful - it's true that "ов" is used with most words to mean "of" something, but I'm not sure you can say the same thing about last names. -ник and -чик can...