Declension table of ?prathamasvara

Masculine	Singular	Dual	Plural
Nominative	prathamasvaraḥ	prathamasvarau	prathamasvarāḥ
Vocative	prathamasvara	prathamasvarau	prathamasvarāḥ
Accusative	prathamasvaram	prathamasvarau	prathamasvarān
Instrumental	prathamasvareṇa	prathamasvarābhyām	prathamasvaraiḥ prathamasvarebhiḥ
Dative	prathamasvarāya	prathamasvarābhyām	prathamasvarebhyaḥ
Ablative	prathamasvarāt	prathamasvarābhyām	prathamasvarebhyaḥ
Genitive	prathamasvarasya	prathamasvarayoḥ	prathamasvarāṇām
Locative	prathamasvare	prathamasvarayoḥ	prathamasvareṣu

Compound prathamasvara -

Adverb -prathamasvaram -prathamasvarāt