Declension table of ?prathamāna

Masculine	Singular	Dual	Plural
Nominative	prathamānaḥ	prathamānau	prathamānāḥ
Vocative	prathamāna	prathamānau	prathamānāḥ
Accusative	prathamānam	prathamānau	prathamānān
Instrumental	prathamānena	prathamānābhyām	prathamānaiḥ prathamānebhiḥ
Dative	prathamānāya	prathamānābhyām	prathamānebhyaḥ
Ablative	prathamānāt	prathamānābhyām	prathamānebhyaḥ
Genitive	prathamānasya	prathamānayoḥ	prathamānānām
Locative	prathamāne	prathamānayoḥ	prathamāneṣu

Compound prathamāna -

Adverb -prathamānam -prathamānāt