Declension table of ?kṛṣṇamasūra

Masculine	Singular	Dual	Plural
Nominative	kṛṣṇamasūraḥ	kṛṣṇamasūrau	kṛṣṇamasūrāḥ
Vocative	kṛṣṇamasūra	kṛṣṇamasūrau	kṛṣṇamasūrāḥ
Accusative	kṛṣṇamasūram	kṛṣṇamasūrau	kṛṣṇamasūrān
Instrumental	kṛṣṇamasūreṇa	kṛṣṇamasūrābhyām	kṛṣṇamasūraiḥ kṛṣṇamasūrebhiḥ
Dative	kṛṣṇamasūrāya	kṛṣṇamasūrābhyām	kṛṣṇamasūrebhyaḥ
Ablative	kṛṣṇamasūrāt	kṛṣṇamasūrābhyām	kṛṣṇamasūrebhyaḥ
Genitive	kṛṣṇamasūrasya	kṛṣṇamasūrayoḥ	kṛṣṇamasūrāṇām
Locative	kṛṣṇamasūre	kṛṣṇamasūrayoḥ	kṛṣṇamasūreṣu

Compound kṛṣṇamasūra -

Adverb -kṛṣṇamasūram -kṛṣṇamasūrāt