Declension table of ?vimānastha

Neuter	Singular	Dual	Plural
Nominative	vimānastham	vimānasthe	vimānasthāni
Vocative	vimānastha	vimānasthe	vimānasthāni
Accusative	vimānastham	vimānasthe	vimānasthāni
Instrumental	vimānasthena	vimānasthābhyām	vimānasthaiḥ
Dative	vimānasthāya	vimānasthābhyām	vimānasthebhyaḥ
Ablative	vimānasthāt	vimānasthābhyām	vimānasthebhyaḥ
Genitive	vimānasthasya	vimānasthayoḥ	vimānasthānām
Locative	vimānasthe	vimānasthayoḥ	vimānastheṣu

Compound vimānastha -

Adverb -vimānastham -vimānasthāt