Each UEFA member has its own football league system, except Liechtenstein. Clubs playing in each top-level league compete for the title as the country's club champions. Clubs also compete in the league and national cup competitions for places in the following season's UEFA club competitions, the UEFA Champions League and UEFA Europa League. Due to promotion and relegation, the clubs playing in the top-level league are different every season, except in San Marino and Gibraltar where there is only one level.