Declension table of kareṇu

Masculine	Singular	Dual	Plural
Nominative	kareṇuḥ	kareṇū	kareṇavaḥ
Vocative	kareṇo	kareṇū	kareṇavaḥ
Accusative	kareṇum	kareṇū	kareṇūn
Instrumental	kareṇunā	kareṇubhyām	kareṇubhiḥ
Dative	kareṇave	kareṇubhyām	kareṇubhyaḥ
Ablative	kareṇoḥ	kareṇubhyām	kareṇubhyaḥ
Genitive	kareṇoḥ	kareṇvoḥ	kareṇūnām
Locative	kareṇau	kareṇvoḥ	kareṇuṣu

Compound kareṇu -

Adverb -kareṇu