You start where, to a native speaker, you might not even get what the word means - because u and ü are not nitpicking, but different letters. Let's take the ex

You start where, to a native speaker, you might not even get what the word means - because u and ü are not nitpicking, but different letters. Let's take the example of "fordern" vs "fördern" - nothing in common, the former means "to demand" and the latter means "to promote/boost/foster".