Declension table of ?vimānaka

Masculine	Singular	Dual	Plural
Nominative	vimānakaḥ	vimānakau	vimānakāḥ
Vocative	vimānaka	vimānakau	vimānakāḥ
Accusative	vimānakam	vimānakau	vimānakān
Instrumental	vimānakena	vimānakābhyām	vimānakaiḥ vimānakebhiḥ
Dative	vimānakāya	vimānakābhyām	vimānakebhyaḥ
Ablative	vimānakāt	vimānakābhyām	vimānakebhyaḥ
Genitive	vimānakasya	vimānakayoḥ	vimānakānām
Locative	vimānake	vimānakayoḥ	vimānakeṣu

Compound vimānaka -

Adverb -vimānakam -vimānakāt