Declension of the word "doppeldecker"

Singular and plural for Doppeldecker, m, strong declension     translation to English double-decker, biplane

Singular
Plural
Singular
Nominativ (Wer? Was?)
der Doppeldecker
die Doppeldecker
Genitiv (Wessen?)
des Doppeldeckers
der Doppeldecker
Dativ (Wem?)
dem Doppeldecker
den Doppeldeckern
Akkusativ (Wen? Was?)
den Doppeldecker
die Doppeldecker
Plural
die Doppeldecker
der Doppeldecker
den Doppeldeckern
die Doppeldecker
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