Declension table of ?chandastva

Neuter	Singular	Dual	Plural
Nominative	chandastvam	chandastve	chandastvāni
Vocative	chandastva	chandastve	chandastvāni
Accusative	chandastvam	chandastve	chandastvāni
Instrumental	chandastvena	chandastvābhyām	chandastvaiḥ
Dative	chandastvāya	chandastvābhyām	chandastvebhyaḥ
Ablative	chandastvāt	chandastvābhyām	chandastvebhyaḥ
Genitive	chandastvasya	chandastvayoḥ	chandastvānām
Locative	chandastve	chandastvayoḥ	chandastveṣu

Compound chandastva -

Adverb -chandastvam -chandastvāt