Declension table of ?ārca

Masculine	Singular	Dual	Plural
Nominative	ārcaḥ	ārcau	ārcāḥ
Vocative	ārca	ārcau	ārcāḥ
Accusative	ārcam	ārcau	ārcān
Instrumental	ārcena	ārcābhyām	ārcaiḥ ārcebhiḥ
Dative	ārcāya	ārcābhyām	ārcebhyaḥ
Ablative	ārcāt	ārcābhyām	ārcebhyaḥ
Genitive	ārcasya	ārcayoḥ	ārcānām
Locative	ārce	ārcayoḥ	ārceṣu

Compound ārca -

Adverb -ārcam -ārcāt