Declension table of ?ṛchya

Masculine	Singular	Dual	Plural
Nominative	ṛchyaḥ	ṛchyau	ṛchyāḥ
Vocative	ṛchya	ṛchyau	ṛchyāḥ
Accusative	ṛchyam	ṛchyau	ṛchyān
Instrumental	ṛchyena	ṛchyābhyām	ṛchyaiḥ ṛchyebhiḥ
Dative	ṛchyāya	ṛchyābhyām	ṛchyebhyaḥ
Ablative	ṛchyāt	ṛchyābhyām	ṛchyebhyaḥ
Genitive	ṛchyasya	ṛchyayoḥ	ṛchyānām
Locative	ṛchye	ṛchyayoḥ	ṛchyeṣu

Compound ṛchya -

Adverb -ṛchyam -ṛchyāt