Declension table of vāyasa

Masculine	Singular	Dual	Plural
Nominative	vāyasaḥ	vāyasau	vāyasāḥ
Vocative	vāyasa	vāyasau	vāyasāḥ
Accusative	vāyasam	vāyasau	vāyasān
Instrumental	vāyasena	vāyasābhyām	vāyasaiḥ vāyasebhiḥ
Dative	vāyasāya	vāyasābhyām	vāyasebhyaḥ
Ablative	vāyasāt	vāyasābhyām	vāyasebhyaḥ
Genitive	vāyasasya	vāyasayoḥ	vāyasānām
Locative	vāyase	vāyasayoḥ	vāyaseṣu

Compound vāyasa -

Adverb -vāyasam -vāyasāt