Declension table of ?sadvastu

Neuter	Singular	Dual	Plural
Nominative	sadvastu	sadvastunī	sadvastūni
Vocative	sadvastu	sadvastunī	sadvastūni
Accusative	sadvastu	sadvastunī	sadvastūni
Instrumental	sadvastunā	sadvastubhyām	sadvastubhiḥ
Dative	sadvastune	sadvastubhyām	sadvastubhyaḥ
Ablative	sadvastunaḥ	sadvastubhyām	sadvastubhyaḥ
Genitive	sadvastunaḥ	sadvastunoḥ	sadvastūnām
Locative	sadvastuni	sadvastunoḥ	sadvastuṣu

Compound sadvastu -

Adverb -sadvastu