Declension table of ?vivyathāna

Neuter	Singular	Dual	Plural
Nominative	vivyathānam	vivyathāne	vivyathānāni
Vocative	vivyathāna	vivyathāne	vivyathānāni
Accusative	vivyathānam	vivyathāne	vivyathānāni
Instrumental	vivyathānena	vivyathānābhyām	vivyathānaiḥ
Dative	vivyathānāya	vivyathānābhyām	vivyathānebhyaḥ
Ablative	vivyathānāt	vivyathānābhyām	vivyathānebhyaḥ
Genitive	vivyathānasya	vivyathānayoḥ	vivyathānānām
Locative	vivyathāne	vivyathānayoḥ	vivyathāneṣu

Compound vivyathāna -

Adverb -vivyathānam -vivyathānāt