Declension table of ?kallatva

Neuter	Singular	Dual	Plural
Nominative	kallatvam	kallatve	kallatvāni
Vocative	kallatva	kallatve	kallatvāni
Accusative	kallatvam	kallatve	kallatvāni
Instrumental	kallatvena	kallatvābhyām	kallatvaiḥ
Dative	kallatvāya	kallatvābhyām	kallatvebhyaḥ
Ablative	kallatvāt	kallatvābhyām	kallatvebhyaḥ
Genitive	kallatvasya	kallatvayoḥ	kallatvānām
Locative	kallatve	kallatvayoḥ	kallatveṣu

Compound kallatva -

Adverb -kallatvam -kallatvāt