Declension table of ?kṛṣṇarūpya

Masculine	Singular	Dual	Plural
Nominative	kṛṣṇarūpyaḥ	kṛṣṇarūpyau	kṛṣṇarūpyāḥ
Vocative	kṛṣṇarūpya	kṛṣṇarūpyau	kṛṣṇarūpyāḥ
Accusative	kṛṣṇarūpyam	kṛṣṇarūpyau	kṛṣṇarūpyān
Instrumental	kṛṣṇarūpyeṇa	kṛṣṇarūpyābhyām	kṛṣṇarūpyaiḥ kṛṣṇarūpyebhiḥ
Dative	kṛṣṇarūpyāya	kṛṣṇarūpyābhyām	kṛṣṇarūpyebhyaḥ
Ablative	kṛṣṇarūpyāt	kṛṣṇarūpyābhyām	kṛṣṇarūpyebhyaḥ
Genitive	kṛṣṇarūpyasya	kṛṣṇarūpyayoḥ	kṛṣṇarūpyāṇām
Locative	kṛṣṇarūpye	kṛṣṇarūpyayoḥ	kṛṣṇarūpyeṣu

Compound kṛṣṇarūpya -

Adverb -kṛṣṇarūpyam -kṛṣṇarūpyāt