Declension table of ?ārka

Neuter	Singular	Dual	Plural
Nominative	ārkam	ārke	ārkāṇi
Vocative	ārka	ārke	ārkāṇi
Accusative	ārkam	ārke	ārkāṇi
Instrumental	ārkeṇa	ārkābhyām	ārkaiḥ
Dative	ārkāya	ārkābhyām	ārkebhyaḥ
Ablative	ārkāt	ārkābhyām	ārkebhyaḥ
Genitive	ārkasya	ārkayoḥ	ārkāṇām
Locative	ārke	ārkayoḥ	ārkeṣu

Compound ārka -

Adverb -ārkam -ārkāt