Declension table of ṛ

Feminine	Singular	Dual	Plural
Nominative	ā	ārau	āraḥ
Vocative	aḥ	ārau	āraḥ
Accusative	āram	ārau	ṝḥ
Instrumental	rā	ṛbhyām	ṛbhiḥ
Dative	re	ṛbhyām	ṛbhyaḥ
Ablative	uḥ	ṛbhyām	ṛbhyaḥ
Genitive	uḥ	roḥ	ṝṇām
Locative	ari	roḥ	ṛṣu

Compound ṛ -

Adverb -ṛ