Declension table of ?vāntānna

Neuter	Singular	Dual	Plural
Nominative	vāntānnam	vāntānne	vāntānnāni
Vocative	vāntānna	vāntānne	vāntānnāni
Accusative	vāntānnam	vāntānne	vāntānnāni
Instrumental	vāntānnena	vāntānnābhyām	vāntānnaiḥ
Dative	vāntānnāya	vāntānnābhyām	vāntānnebhyaḥ
Ablative	vāntānnāt	vāntānnābhyām	vāntānnebhyaḥ
Genitive	vāntānnasya	vāntānnayoḥ	vāntānnānām
Locative	vāntānne	vāntānnayoḥ	vāntānneṣu

Compound vāntānna -

Adverb -vāntānnam -vāntānnāt