Declension table of ?prothamāna

Neuter	Singular	Dual	Plural
Nominative	prothamānam	prothamāne	prothamānāni
Vocative	prothamāna	prothamāne	prothamānāni
Accusative	prothamānam	prothamāne	prothamānāni
Instrumental	prothamānena	prothamānābhyām	prothamānaiḥ
Dative	prothamānāya	prothamānābhyām	prothamānebhyaḥ
Ablative	prothamānāt	prothamānābhyām	prothamānebhyaḥ
Genitive	prothamānasya	prothamānayoḥ	prothamānānām
Locative	prothamāne	prothamānayoḥ	prothamāneṣu

Compound prothamāna -

Adverb -prothamānam -prothamānāt