Try to guess 20 first level administrative subdivision capitals (both in Greece and other countries) closest to Ioánnina.
For practical reasons, I'm making some exceptions in this series. Relevant exception for this quiz is:
For Slovenia and Northern Macedonia, only largest city in every statistical region is included.
If some subdivision capitals are omitted but should be included, please let me know.
If speakers of languages that don't use latin script consider I should include different transliteration of city names, please let me know.