Declension table of ?vivayana

Neuter	Singular	Dual	Plural
Nominative	vivayanam	vivayane	vivayanāni
Vocative	vivayana	vivayane	vivayanāni
Accusative	vivayanam	vivayane	vivayanāni
Instrumental	vivayanena	vivayanābhyām	vivayanaiḥ
Dative	vivayanāya	vivayanābhyām	vivayanebhyaḥ
Ablative	vivayanāt	vivayanābhyām	vivayanebhyaḥ
Genitive	vivayanasya	vivayanayoḥ	vivayanānām
Locative	vivayane	vivayanayoḥ	vivayaneṣu

Compound vivayana -

Adverb -vivayanam -vivayanāt