Declension table of ?saṃvasana

Neuter	Singular	Dual	Plural
Nominative	saṃvasanam	saṃvasane	saṃvasanāni
Vocative	saṃvasana	saṃvasane	saṃvasanāni
Accusative	saṃvasanam	saṃvasane	saṃvasanāni
Instrumental	saṃvasanena	saṃvasanābhyām	saṃvasanaiḥ
Dative	saṃvasanāya	saṃvasanābhyām	saṃvasanebhyaḥ
Ablative	saṃvasanāt	saṃvasanābhyām	saṃvasanebhyaḥ
Genitive	saṃvasanasya	saṃvasanayoḥ	saṃvasanānām
Locative	saṃvasane	saṃvasanayoḥ	saṃvasaneṣu

Compound saṃvasana -

Adverb -saṃvasanam -saṃvasanāt