Referenzkugel	Nominativ, Singular	nominative case, singular
	Referenzkugel	Genitiv, Singular	genitive case, singular
	Referenzkugel	Dativ, Singular	dative case, singular
	Referenzkugel	Akkusativ, Singular	accusative case, singular
	Referenzkugeln	Nominativ, Plural	nominative case, plural
	Referenzkugeln	Genitiv, Plural	genitive case, plural
	Referenzkugeln	Dativ, Plural	dative case, plural
	Referenzkugeln	Akkusativ, Plural	accusative case, plural