Has anyone found an extensive database of Russian names in different forms?

Question

Database

For one automation, I check the database to see if there is a name there, so that in a personal message to a person when addressing by name, they don’t screw up, otherwise they write the name incorrectly or with an error ...
So, it doesn’t come across as normal. I download - everything seems to be ok, but for example it turns out that the name Oleg is not in it. far perishing about more rare to speak.
I am looking for names in a list, in the nominative case. Different forms are - Vova, Vladimir - because. the name from the words of the client is recorded