Declension table of ?ṛmphivas

Masculine	Singular	Dual	Plural
Nominative	ṛmphivān	ṛmphivāṃsau	ṛmphivāṃsaḥ
Vocative	ṛmphivan	ṛmphivāṃsau	ṛmphivāṃsaḥ
Accusative	ṛmphivāṃsam	ṛmphivāṃsau	ṛmphuṣaḥ
Instrumental	ṛmphuṣā	ṛmphivadbhyām	ṛmphivadbhiḥ
Dative	ṛmphuṣe	ṛmphivadbhyām	ṛmphivadbhyaḥ
Ablative	ṛmphuṣaḥ	ṛmphivadbhyām	ṛmphivadbhyaḥ
Genitive	ṛmphuṣaḥ	ṛmphuṣoḥ	ṛmphuṣām
Locative	ṛmphuṣi	ṛmphuṣoḥ	ṛmphivatsu

Compound ṛmphivat -

Adverb -ṛmphivas