Funniest thing is for eachother(at least when i see finnish grammar) even things that are different seem logical. Like you have a form that means something like "without a dog" which we dont have but i can form something that is grammatically incorrect yet people would understand like "kutyátlanul" while the correct form would be "kutya nélkül". Also its even funnier cause the grammar might be very similar but the words arent. I have a finnish friend who learned a bit of hungarian and he said in his group(mixed nationalities) he picked up on the grammar way faster then anyone else but for vocabulary south slavic people were much faster. Tho now i live in sweden so i actually get a fair bit of exposure to finnish.