Declension table of ?vavivas

Masculine	Singular	Dual	Plural
Nominative	vavivān	vavivāṃsau	vavivāṃsaḥ
Vocative	vavivan	vavivāṃsau	vavivāṃsaḥ
Accusative	vavivāṃsam	vavivāṃsau	vavuṣaḥ
Instrumental	vavuṣā	vavivadbhyām	vavivadbhiḥ
Dative	vavuṣe	vavivadbhyām	vavivadbhyaḥ
Ablative	vavuṣaḥ	vavivadbhyām	vavivadbhyaḥ
Genitive	vavuṣaḥ	vavuṣoḥ	vavuṣām
Locative	vavuṣi	vavuṣoḥ	vavivatsu

Compound vavivat -

Adverb -vavivas