Declension table of ?vivadana

Neuter	Singular	Dual	Plural
Nominative	vivadanam	vivadane	vivadanāni
Vocative	vivadana	vivadane	vivadanāni
Accusative	vivadanam	vivadane	vivadanāni
Instrumental	vivadanena	vivadanābhyām	vivadanaiḥ
Dative	vivadanāya	vivadanābhyām	vivadanebhyaḥ
Ablative	vivadanāt	vivadanābhyām	vivadanebhyaḥ
Genitive	vivadanasya	vivadanayoḥ	vivadanānām
Locative	vivadane	vivadanayoḥ	vivadaneṣu

Compound vivadana -

Adverb -vivadanam -vivadanāt