Declension of the word "Prüfstein"

Singular and plural for Prüfstein, m, strong declension     translation to English touchstone, test

Singular
Plural
Singular
Nominativ (Wer? Was?)
der Prüfstein
die Prüfsteine
Genitiv (Wessen?)
des Prüfsteines / Prüfsteins
der Prüfsteine
Dativ (Wem?)
dem Prüfstein / Prüfsteine
den Prüfsteinen
Akkusativ (Wen? Was?)
den Prüfstein
die Prüfsteine
Plural
die Prüfsteine
der Prüfsteine
den Prüfsteinen
die Prüfsteine
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