Declension table of ?manmana

Masculine	Singular	Dual	Plural
Nominative	manmanaḥ	manmanau	manmanāḥ
Vocative	manmana	manmanau	manmanāḥ
Accusative	manmanam	manmanau	manmanān
Instrumental	manmanena	manmanābhyām	manmanaiḥ manmanebhiḥ
Dative	manmanāya	manmanābhyām	manmanebhyaḥ
Ablative	manmanāt	manmanābhyām	manmanebhyaḥ
Genitive	manmanasya	manmanayoḥ	manmanānām
Locative	manmane	manmanayoḥ	manmaneṣu

Compound manmana -

Adverb -manmanam -manmanāt