Declension of the word "rollkupfer"

Singular and plural for Rollkupfer, n, strong declension

Singular
Plural
Singular
Nominativ (Wer? Was?)
das Rollkupfer
Genitiv (Wessen?)
des Rollkupfers
Dativ (Wem?)
dem Rollkupfer
Akkusativ (Wen? Was?)
das Rollkupfer
Plural
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