Declension table of vaca

Masculine	Singular	Dual	Plural
Nominative	vacaḥ	vacau	vacāḥ
Vocative	vaca	vacau	vacāḥ
Accusative	vacam	vacau	vacān
Instrumental	vacena	vacābhyām	vacaiḥ vacebhiḥ
Dative	vacāya	vacābhyām	vacebhyaḥ
Ablative	vacāt	vacābhyām	vacebhyaḥ
Genitive	vacasya	vacayoḥ	vacānām
Locative	vace	vacayoḥ	vaceṣu

Compound vaca -

Adverb -vacam -vacāt