Declension table of ?prathamavayasin

Masculine	Singular	Dual	Plural
Nominative	prathamavayasī	prathamavayasinau	prathamavayasinaḥ
Vocative	prathamavayasin	prathamavayasinau	prathamavayasinaḥ
Accusative	prathamavayasinam	prathamavayasinau	prathamavayasinaḥ
Instrumental	prathamavayasinā	prathamavayasibhyām	prathamavayasibhiḥ
Dative	prathamavayasine	prathamavayasibhyām	prathamavayasibhyaḥ
Ablative	prathamavayasinaḥ	prathamavayasibhyām	prathamavayasibhyaḥ
Genitive	prathamavayasinaḥ	prathamavayasinoḥ	prathamavayasinām
Locative	prathamavayasini	prathamavayasinoḥ	prathamavayasiṣu

Compound prathamavayasi -

Adverb -prathamavayasi