Declension table of ?vimanthana

Neuter	Singular	Dual	Plural
Nominative	vimanthanam	vimanthane	vimanthanāni
Vocative	vimanthana	vimanthane	vimanthanāni
Accusative	vimanthanam	vimanthane	vimanthanāni
Instrumental	vimanthanena	vimanthanābhyām	vimanthanaiḥ
Dative	vimanthanāya	vimanthanābhyām	vimanthanebhyaḥ
Ablative	vimanthanāt	vimanthanābhyām	vimanthanebhyaḥ
Genitive	vimanthanasya	vimanthanayoḥ	vimanthanānām
Locative	vimanthane	vimanthanayoḥ	vimanthaneṣu

Compound vimanthana -

Adverb -vimanthanam -vimanthanāt