Declension table of ?vimānana

Neuter	Singular	Dual	Plural
Nominative	vimānanam	vimānane	vimānanāni
Vocative	vimānana	vimānane	vimānanāni
Accusative	vimānanam	vimānane	vimānanāni
Instrumental	vimānanena	vimānanābhyām	vimānanaiḥ
Dative	vimānanāya	vimānanābhyām	vimānanebhyaḥ
Ablative	vimānanāt	vimānanābhyām	vimānanebhyaḥ
Genitive	vimānanasya	vimānanayoḥ	vimānanānām
Locative	vimānane	vimānanayoḥ	vimānaneṣu

Compound vimānana -

Adverb -vimānanam -vimānanāt