Declension table of ?bhāvatva

Neuter	Singular	Dual	Plural
Nominative	bhāvatvam	bhāvatve	bhāvatvāni
Vocative	bhāvatva	bhāvatve	bhāvatvāni
Accusative	bhāvatvam	bhāvatve	bhāvatvāni
Instrumental	bhāvatvena	bhāvatvābhyām	bhāvatvaiḥ
Dative	bhāvatvāya	bhāvatvābhyām	bhāvatvebhyaḥ
Ablative	bhāvatvāt	bhāvatvābhyām	bhāvatvebhyaḥ
Genitive	bhāvatvasya	bhāvatvayoḥ	bhāvatvānām
Locative	bhāvatve	bhāvatvayoḥ	bhāvatveṣu

Compound bhāvatva -

Adverb -bhāvatvam -bhāvatvāt