Declension table of ?śāstṛtva

Neuter	Singular	Dual	Plural
Nominative	śāstṛtvam	śāstṛtve	śāstṛtvāni
Vocative	śāstṛtva	śāstṛtve	śāstṛtvāni
Accusative	śāstṛtvam	śāstṛtve	śāstṛtvāni
Instrumental	śāstṛtvena	śāstṛtvābhyām	śāstṛtvaiḥ
Dative	śāstṛtvāya	śāstṛtvābhyām	śāstṛtvebhyaḥ
Ablative	śāstṛtvāt	śāstṛtvābhyām	śāstṛtvebhyaḥ
Genitive	śāstṛtvasya	śāstṛtvayoḥ	śāstṛtvānām
Locative	śāstṛtve	śāstṛtvayoḥ	śāstṛtveṣu

Compound śāstṛtva -

Adverb -śāstṛtvam -śāstṛtvāt