Declension table of ?prathamārdha

Masculine	Singular	Dual	Plural
Nominative	prathamārdhaḥ	prathamārdhau	prathamārdhāḥ
Vocative	prathamārdha	prathamārdhau	prathamārdhāḥ
Accusative	prathamārdham	prathamārdhau	prathamārdhān
Instrumental	prathamārdhena	prathamārdhābhyām	prathamārdhaiḥ prathamārdhebhiḥ
Dative	prathamārdhāya	prathamārdhābhyām	prathamārdhebhyaḥ
Ablative	prathamārdhāt	prathamārdhābhyām	prathamārdhebhyaḥ
Genitive	prathamārdhasya	prathamārdhayoḥ	prathamārdhānām
Locative	prathamārdhe	prathamārdhayoḥ	prathamārdheṣu

Compound prathamārdha -

Adverb -prathamārdham -prathamārdhāt