Declension table of ?santva

Neuter	Singular	Dual	Plural
Nominative	santvam	santve	santvāni
Vocative	santva	santve	santvāni
Accusative	santvam	santve	santvāni
Instrumental	santvena	santvābhyām	santvaiḥ
Dative	santvāya	santvābhyām	santvebhyaḥ
Ablative	santvāt	santvābhyām	santvebhyaḥ
Genitive	santvasya	santvayoḥ	santvānām
Locative	santve	santvayoḥ	santveṣu

Compound santva -

Adverb -santvam -santvāt