Declension table of ?prothin

Masculine	Singular	Dual	Plural
Nominative	prothī	prothinau	prothinaḥ
Vocative	prothin	prothinau	prothinaḥ
Accusative	prothinam	prothinau	prothinaḥ
Instrumental	prothinā	prothibhyām	prothibhiḥ
Dative	prothine	prothibhyām	prothibhyaḥ
Ablative	prothinaḥ	prothibhyām	prothibhyaḥ
Genitive	prothinaḥ	prothinoḥ	prothinām
Locative	prothini	prothinoḥ	prothiṣu

Compound prothi -

Adverb -prothi