Declension table of ?vivīvas

Neuter	Singular	Dual	Plural
Nominative	vivīvat	vivyuṣī	vivīvāṃsi
Vocative	vivīvat	vivyuṣī	vivīvāṃsi
Accusative	vivīvat	vivyuṣī	vivīvāṃsi
Instrumental	vivyuṣā	vivīvadbhyām	vivīvadbhiḥ
Dative	vivyuṣe	vivīvadbhyām	vivīvadbhyaḥ
Ablative	vivyuṣaḥ	vivīvadbhyām	vivīvadbhyaḥ
Genitive	vivyuṣaḥ	vivyuṣoḥ	vivyuṣām
Locative	vivyuṣi	vivyuṣoḥ	vivīvatsu

Compound vivīvat -

Adverb -vivīvat