Declension table of ?vidmana

Neuter	Singular	Dual	Plural
Nominative	vidmanam	vidmane	vidmanāni
Vocative	vidmana	vidmane	vidmanāni
Accusative	vidmanam	vidmane	vidmanāni
Instrumental	vidmanena	vidmanābhyām	vidmanaiḥ
Dative	vidmanāya	vidmanābhyām	vidmanebhyaḥ
Ablative	vidmanāt	vidmanābhyām	vidmanebhyaḥ
Genitive	vidmanasya	vidmanayoḥ	vidmanānām
Locative	vidmane	vidmanayoḥ	vidmaneṣu

Compound vidmana -

Adverb -vidmanam -vidmanāt