Declension table of ?barku

Masculine	Singular	Dual	Plural
Nominative	barkuḥ	barkū	barkavaḥ
Vocative	barko	barkū	barkavaḥ
Accusative	barkum	barkū	barkūn
Instrumental	barkuṇā	barkubhyām	barkubhiḥ
Dative	barkave	barkubhyām	barkubhyaḥ
Ablative	barkoḥ	barkubhyām	barkubhyaḥ
Genitive	barkoḥ	barkvoḥ	barkūṇām
Locative	barkau	barkvoḥ	barkuṣu

Compound barku -

Adverb -barku