Declension table of ?śāvatva

Neuter	Singular	Dual	Plural
Nominative	śāvatvam	śāvatve	śāvatvāni
Vocative	śāvatva	śāvatve	śāvatvāni
Accusative	śāvatvam	śāvatve	śāvatvāni
Instrumental	śāvatvena	śāvatvābhyām	śāvatvaiḥ
Dative	śāvatvāya	śāvatvābhyām	śāvatvebhyaḥ
Ablative	śāvatvāt	śāvatvābhyām	śāvatvebhyaḥ
Genitive	śāvatvasya	śāvatvayoḥ	śāvatvānām
Locative	śāvatve	śāvatvayoḥ	śāvatveṣu

Compound śāvatva -

Adverb -śāvatvam -śāvatvāt