create alias 2020_summer_olympics (0) -> 2020_tokyo_olympics (150)
create alias 2020_summer_olympic (0) -> 2020_tokyo_olympics (150)
create alias 2021_tokyo_olympics (0) -> 2020_tokyo_olympics (150)
create alias 2021_tokyo_olympic (0) -> 2020_tokyo_olympics (150)
create alias 2021_summer_olympics (0) -> 2020_tokyo_olympics (150)
create alias 2021_summer_olympic (0) -> 2020_tokyo_olympics (150)