Declension table of ?ṛbhva

Neuter	Singular	Dual	Plural
Nominative	ṛbhvam	ṛbhve	ṛbhvāṇi
Vocative	ṛbhva	ṛbhve	ṛbhvāṇi
Accusative	ṛbhvam	ṛbhve	ṛbhvāṇi
Instrumental	ṛbhveṇa	ṛbhvābhyām	ṛbhvaiḥ
Dative	ṛbhvāya	ṛbhvābhyām	ṛbhvebhyaḥ
Ablative	ṛbhvāt	ṛbhvābhyām	ṛbhvebhyaḥ
Genitive	ṛbhvasya	ṛbhvayoḥ	ṛbhvāṇām
Locative	ṛbhve	ṛbhvayoḥ	ṛbhveṣu

Compound ṛbhva -

Adverb -ṛbhvam -ṛbhvāt