Declension table of ?ruvūka

Masculine	Singular	Dual	Plural
Nominative	ruvūkaḥ	ruvūkau	ruvūkāḥ
Vocative	ruvūka	ruvūkau	ruvūkāḥ
Accusative	ruvūkam	ruvūkau	ruvūkān
Instrumental	ruvūkeṇa	ruvūkābhyām	ruvūkaiḥ ruvūkebhiḥ
Dative	ruvūkāya	ruvūkābhyām	ruvūkebhyaḥ
Ablative	ruvūkāt	ruvūkābhyām	ruvūkebhyaḥ
Genitive	ruvūkasya	ruvūkayoḥ	ruvūkāṇām
Locative	ruvūke	ruvūkayoḥ	ruvūkeṣu

Compound ruvūka -

Adverb -ruvūkam -ruvūkāt