Declension table of ?sāratva

Neuter	Singular	Dual	Plural
Nominative	sāratvam	sāratve	sāratvāni
Vocative	sāratva	sāratve	sāratvāni
Accusative	sāratvam	sāratve	sāratvāni
Instrumental	sāratvena	sāratvābhyām	sāratvaiḥ
Dative	sāratvāya	sāratvābhyām	sāratvebhyaḥ
Ablative	sāratvāt	sāratvābhyām	sāratvebhyaḥ
Genitive	sāratvasya	sāratvayoḥ	sāratvānām
Locative	sāratve	sāratvayoḥ	sāratveṣu

Compound sāratva -

Adverb -sāratvam -sāratvāt