Declension table of ?kṛṣṇavetra

Masculine	Singular	Dual	Plural
Nominative	kṛṣṇavetraḥ	kṛṣṇavetrau	kṛṣṇavetrāḥ
Vocative	kṛṣṇavetra	kṛṣṇavetrau	kṛṣṇavetrāḥ
Accusative	kṛṣṇavetram	kṛṣṇavetrau	kṛṣṇavetrān
Instrumental	kṛṣṇavetreṇa	kṛṣṇavetrābhyām	kṛṣṇavetraiḥ kṛṣṇavetrebhiḥ
Dative	kṛṣṇavetrāya	kṛṣṇavetrābhyām	kṛṣṇavetrebhyaḥ
Ablative	kṛṣṇavetrāt	kṛṣṇavetrābhyām	kṛṣṇavetrebhyaḥ
Genitive	kṛṣṇavetrasya	kṛṣṇavetrayoḥ	kṛṣṇavetrāṇām
Locative	kṛṣṇavetre	kṛṣṇavetrayoḥ	kṛṣṇavetreṣu

Compound kṛṣṇavetra -

Adverb -kṛṣṇavetram -kṛṣṇavetrāt