So you can look at the third person of the past tense only as a list or you might, if languages that have cases, you can look at just the instrumental case, let's say in Russian or Slavic languages.
Which is an awesome idea and everything, but Russian, the language that developed from what the Rus spoke, sounds a lot more Slavic than it sounds, you know, Swedish.
The same in Croatia, even though I spoke other Slavic languages and I worked a bit on my Croatian and I had a Croatian here, even a Serbian Croatian, it's more or less the same phrase book and nothing.