Declension table of ?vayasyabhāva

Masculine	Singular	Dual	Plural
Nominative	vayasyabhāvaḥ	vayasyabhāvau	vayasyabhāvāḥ
Vocative	vayasyabhāva	vayasyabhāvau	vayasyabhāvāḥ
Accusative	vayasyabhāvam	vayasyabhāvau	vayasyabhāvān
Instrumental	vayasyabhāvena	vayasyabhāvābhyām	vayasyabhāvaiḥ vayasyabhāvebhiḥ
Dative	vayasyabhāvāya	vayasyabhāvābhyām	vayasyabhāvebhyaḥ
Ablative	vayasyabhāvāt	vayasyabhāvābhyām	vayasyabhāvebhyaḥ
Genitive	vayasyabhāvasya	vayasyabhāvayoḥ	vayasyabhāvānām
Locative	vayasyabhāve	vayasyabhāvayoḥ	vayasyabhāveṣu

Compound vayasyabhāva -

Adverb -vayasyabhāvam -vayasyabhāvāt