Versionsgeschichte von „is this month earlier than that month in the year?“ (Z16542)
Diff Uutwoal: Do Boxen fon do wonskede Versione markierje un 'Enter' drukke of ap dän Knoop unner klikke.
Legende: (Aktuäl) = Unnerskeed tou ju aktuälle Version,
(Lääste) = Unnerskeed tou ju foarige Version, L = Litje Annerenge