Declension table of ?ṛbīsapakva

Neuter	Singular	Dual	Plural
Nominative	ṛbīsapakvam	ṛbīsapakve	ṛbīsapakvāni
Vocative	ṛbīsapakva	ṛbīsapakve	ṛbīsapakvāni
Accusative	ṛbīsapakvam	ṛbīsapakve	ṛbīsapakvāni
Instrumental	ṛbīsapakvena	ṛbīsapakvābhyām	ṛbīsapakvaiḥ
Dative	ṛbīsapakvāya	ṛbīsapakvābhyām	ṛbīsapakvebhyaḥ
Ablative	ṛbīsapakvāt	ṛbīsapakvābhyām	ṛbīsapakvebhyaḥ
Genitive	ṛbīsapakvasya	ṛbīsapakvayoḥ	ṛbīsapakvānām
Locative	ṛbīsapakve	ṛbīsapakvayoḥ	ṛbīsapakveṣu

Compound ṛbīsapakva -

Adverb -ṛbīsapakvam -ṛbīsapakvāt