Declension table of ?arkin

Neuter	Singular	Dual	Plural
Nominative	arki	arkiṇī	arkīṇi
Vocative	arkin arki	arkiṇī	arkīṇi
Accusative	arki	arkiṇī	arkīṇi
Instrumental	arkiṇā	arkibhyām	arkibhiḥ
Dative	arkiṇe	arkibhyām	arkibhyaḥ
Ablative	arkiṇaḥ	arkibhyām	arkibhyaḥ
Genitive	arkiṇaḥ	arkiṇoḥ	arkiṇām
Locative	arkiṇi	arkiṇoḥ	arkiṣu

Compound arki -

Adverb -arki