Declension table of ?arkin

Masculine	Singular	Dual	Plural
Nominative	arkī	arkiṇau	arkiṇaḥ
Vocative	arkin	arkiṇau	arkiṇaḥ
Accusative	arkiṇam	arkiṇau	arkiṇaḥ
Instrumental	arkiṇā	arkibhyām	arkibhiḥ
Dative	arkiṇe	arkibhyām	arkibhyaḥ
Ablative	arkiṇaḥ	arkibhyām	arkibhyaḥ
Genitive	arkiṇaḥ	arkiṇoḥ	arkiṇām
Locative	arkiṇi	arkiṇoḥ	arkiṣu

Compound arki -

Adverb -arki