Declension table of ?vavivas

Neuter	Singular	Dual	Plural
Nominative	vavivat	vavuṣī	vavivāṃsi
Vocative	vavivat	vavuṣī	vavivāṃsi
Accusative	vavivat	vavuṣī	vavivāṃsi
Instrumental	vavuṣā	vavivadbhyām	vavivadbhiḥ
Dative	vavuṣe	vavivadbhyām	vavivadbhyaḥ
Ablative	vavuṣaḥ	vavivadbhyām	vavivadbhyaḥ
Genitive	vavuṣaḥ	vavuṣoḥ	vavuṣām
Locative	vavuṣi	vavuṣoḥ	vavivatsu

Compound vavivat -

Adverb -vavivas