Declension of the word "Tunnelbau"

Singular and plural for Tunnelbau, m, mixed declension     translation to English tunnel construction, tunneling

Singular
Plural
Singular
Nominativ (Wer? Was?)
der Tunnelbau
die Tunnelbauten
Genitiv (Wessen?)
des Tunnelbaus / Tunnelbaues
der Tunnelbauten
Dativ (Wem?)
dem Tunnelbau
den Tunnelbauten
Akkusativ (Wen? Was?)
den Tunnelbau
die Tunnelbauten
Plural
die Tunnelbauten
der Tunnelbauten
den Tunnelbauten
die Tunnelbauten
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