Declension table of ?ṛchamāna

Masculine	Singular	Dual	Plural
Nominative	ṛchamānaḥ	ṛchamānau	ṛchamānāḥ
Vocative	ṛchamāna	ṛchamānau	ṛchamānāḥ
Accusative	ṛchamānam	ṛchamānau	ṛchamānān
Instrumental	ṛchamānena	ṛchamānābhyām	ṛchamānaiḥ ṛchamānebhiḥ
Dative	ṛchamānāya	ṛchamānābhyām	ṛchamānebhyaḥ
Ablative	ṛchamānāt	ṛchamānābhyām	ṛchamānebhyaḥ
Genitive	ṛchamānasya	ṛchamānayoḥ	ṛchamānānām
Locative	ṛchamāne	ṛchamānayoḥ	ṛchamāneṣu

Compound ṛchamāna -

Adverb -ṛchamānam -ṛchamānāt