Gangöffnung	Nominativ, Singular	nominative case, singular
	Gangöffnungs	Genitiv, Singular	genitive case, singular
	Gangöffnung	Dativ, Singular	dative case, singular
	Gangöffnung	Akkusativ, Singular	accusative case, singular
	-	Nominativ, Plural
	-	Genitiv, Plural
	-	Dativ, Plural
	-	Akkusativ, Plural