Declension table of ?ṛcchat

Masculine	Singular	Dual	Plural
Nominative	ṛcchan	ṛcchantau	ṛcchantaḥ
Vocative	ṛcchan	ṛcchantau	ṛcchantaḥ
Accusative	ṛcchantam	ṛcchantau	ṛcchataḥ
Instrumental	ṛcchatā	ṛcchadbhyām	ṛcchadbhiḥ
Dative	ṛcchate	ṛcchadbhyām	ṛcchadbhyaḥ
Ablative	ṛcchataḥ	ṛcchadbhyām	ṛcchadbhyaḥ
Genitive	ṛcchataḥ	ṛcchatoḥ	ṛcchatām
Locative	ṛcchati	ṛcchatoḥ	ṛcchatsu

Compound ṛcchat -

Adverb -ṛcchantam