The UEFA Champions League employed to start with a double round-robin group stage of 32 groups till it evolved right into a league section of 36 groups, which is preceded by two qualification 'streams' for teams that do not receive direct entry towards the Event good. A map of UEFA https://reidphtht.blogdosaga.com/36309296/a-simple-key-for-what-are-the-uefa-champions-league-and-uefa-europa-league-unveiled