Declension table of ?vasvanta

Neuter	Singular	Dual	Plural
Nominative	vasvantam	vasvante	vasvantāni
Vocative	vasvanta	vasvante	vasvantāni
Accusative	vasvantam	vasvante	vasvantāni
Instrumental	vasvantena	vasvantābhyām	vasvantaiḥ
Dative	vasvantāya	vasvantābhyām	vasvantebhyaḥ
Ablative	vasvantāt	vasvantābhyām	vasvantebhyaḥ
Genitive	vasvantasya	vasvantayoḥ	vasvantānām
Locative	vasvante	vasvantayoḥ	vasvanteṣu

Compound vasvanta -

Adverb -vasvantam -vasvantāt