Declension table of ?ṛphivas

Neuter	Singular	Dual	Plural
Nominative	ṛphivat	ṛphuṣī	ṛphivāṃsi
Vocative	ṛphivat	ṛphuṣī	ṛphivāṃsi
Accusative	ṛphivat	ṛphuṣī	ṛphivāṃsi
Instrumental	ṛphuṣā	ṛphivadbhyām	ṛphivadbhiḥ
Dative	ṛphuṣe	ṛphivadbhyām	ṛphivadbhyaḥ
Ablative	ṛphuṣaḥ	ṛphivadbhyām	ṛphivadbhyaḥ
Genitive	ṛphuṣaḥ	ṛphuṣoḥ	ṛphuṣām
Locative	ṛphuṣi	ṛphuṣoḥ	ṛphivatsu

Compound ṛphivat -

Adverb -ṛphivas