Declension table of ?śailatva

Neuter	Singular	Dual	Plural
Nominative	śailatvam	śailatve	śailatvāni
Vocative	śailatva	śailatve	śailatvāni
Accusative	śailatvam	śailatve	śailatvāni
Instrumental	śailatvena	śailatvābhyām	śailatvaiḥ
Dative	śailatvāya	śailatvābhyām	śailatvebhyaḥ
Ablative	śailatvāt	śailatvābhyām	śailatvebhyaḥ
Genitive	śailatvasya	śailatvayoḥ	śailatvānām
Locative	śailatve	śailatvayoḥ	śailatveṣu

Compound śailatva -

Adverb -śailatvam -śailatvāt