Declension table of ?kṛṣṇakaravīra

Masculine	Singular	Dual	Plural
Nominative	kṛṣṇakaravīraḥ	kṛṣṇakaravīrau	kṛṣṇakaravīrāḥ
Vocative	kṛṣṇakaravīra	kṛṣṇakaravīrau	kṛṣṇakaravīrāḥ
Accusative	kṛṣṇakaravīram	kṛṣṇakaravīrau	kṛṣṇakaravīrān
Instrumental	kṛṣṇakaravīreṇa	kṛṣṇakaravīrābhyām	kṛṣṇakaravīraiḥ kṛṣṇakaravīrebhiḥ
Dative	kṛṣṇakaravīrāya	kṛṣṇakaravīrābhyām	kṛṣṇakaravīrebhyaḥ
Ablative	kṛṣṇakaravīrāt	kṛṣṇakaravīrābhyām	kṛṣṇakaravīrebhyaḥ
Genitive	kṛṣṇakaravīrasya	kṛṣṇakaravīrayoḥ	kṛṣṇakaravīrāṇām
Locative	kṛṣṇakaravīre	kṛṣṇakaravīrayoḥ	kṛṣṇakaravīreṣu

Compound kṛṣṇakaravīra -

Adverb -kṛṣṇakaravīram -kṛṣṇakaravīrāt