Declension table of ?vivasana

Neuter	Singular	Dual	Plural
Nominative	vivasanam	vivasane	vivasanāni
Vocative	vivasana	vivasane	vivasanāni
Accusative	vivasanam	vivasane	vivasanāni
Instrumental	vivasanena	vivasanābhyām	vivasanaiḥ
Dative	vivasanāya	vivasanābhyām	vivasanebhyaḥ
Ablative	vivasanāt	vivasanābhyām	vivasanebhyaḥ
Genitive	vivasanasya	vivasanayoḥ	vivasanānām
Locative	vivasane	vivasanayoḥ	vivasaneṣu

Compound vivasana -

Adverb -vivasanam -vivasanāt