Declension table of ?vayiyu

Masculine	Singular	Dual	Plural
Nominative	vayiyuḥ	vayiyū	vayiyavaḥ
Vocative	vayiyo	vayiyū	vayiyavaḥ
Accusative	vayiyum	vayiyū	vayiyūn
Instrumental	vayiyunā	vayiyubhyām	vayiyubhiḥ
Dative	vayiyave	vayiyubhyām	vayiyubhyaḥ
Ablative	vayiyoḥ	vayiyubhyām	vayiyubhyaḥ
Genitive	vayiyoḥ	vayiyvoḥ	vayiyūnām
Locative	vayiyau	vayiyvoḥ	vayiyuṣu

Compound vayiyu -

Adverb -vayiyu