Declension table of ?aruc

Masculine	Singular	Dual	Plural
Nominative	aruk	arucau	arucaḥ
Vocative	aruk	arucau	arucaḥ
Accusative	arucam	arucau	arucaḥ
Instrumental	arucā	arugbhyām	arugbhiḥ
Dative	aruce	arugbhyām	arugbhyaḥ
Ablative	arucaḥ	arugbhyām	arugbhyaḥ
Genitive	arucaḥ	arucoḥ	arucām
Locative	aruci	arucoḥ	arukṣu

Compound aruk -

Adverb -aruk