I've attempted to search for this but have yet to come up with anything.

For those of you who speak languages other than English, what ligatures do you wish were more common?

To add to that, what letter combinations appear frequently enough in other languages to warrant such ligatures? (ex. is /f/iacute/ a more frequent combination than /f/idieresis/?)

In the hope that I can eventually make a typeface that is truly capable of being used outside the English-Speaking world, I'd like to make it as refined and intuitive for other orthographies as most are for English.