Here at the Mordovian University I even ran brief course in Komi for Mordvinian students. It's not easy to find likeness while listening to unfamiliar speech. But it soon comes clear when you just look at some text in that language. That's a difficult question. There is some interesting thing I noted when I started working in Mordovian University.
People here are very cautious.
They always take precautions. For example when they look into a classroom during lecture they always do so in a very cautious manner. You couldn't even see who that person was who peeped into. They won't cross the threshold. If they should enter the room they'll want to stay close to the wall.