Declension table of ?kalyatva

Neuter	Singular	Dual	Plural
Nominative	kalyatvam	kalyatve	kalyatvāni
Vocative	kalyatva	kalyatve	kalyatvāni
Accusative	kalyatvam	kalyatve	kalyatvāni
Instrumental	kalyatvena	kalyatvābhyām	kalyatvaiḥ
Dative	kalyatvāya	kalyatvābhyām	kalyatvebhyaḥ
Ablative	kalyatvāt	kalyatvābhyām	kalyatvebhyaḥ
Genitive	kalyatvasya	kalyatvayoḥ	kalyatvānām
Locative	kalyatve	kalyatvayoḥ	kalyatveṣu

Compound kalyatva -

Adverb -kalyatvam -kalyatvāt