Declension table of ?kṛṣṇiya

Masculine	Singular	Dual	Plural
Nominative	kṛṣṇiyaḥ	kṛṣṇiyau	kṛṣṇiyāḥ
Vocative	kṛṣṇiya	kṛṣṇiyau	kṛṣṇiyāḥ
Accusative	kṛṣṇiyam	kṛṣṇiyau	kṛṣṇiyān
Instrumental	kṛṣṇiyena	kṛṣṇiyābhyām	kṛṣṇiyaiḥ kṛṣṇiyebhiḥ
Dative	kṛṣṇiyāya	kṛṣṇiyābhyām	kṛṣṇiyebhyaḥ
Ablative	kṛṣṇiyāt	kṛṣṇiyābhyām	kṛṣṇiyebhyaḥ
Genitive	kṛṣṇiyasya	kṛṣṇiyayoḥ	kṛṣṇiyānām
Locative	kṛṣṇiye	kṛṣṇiyayoḥ	kṛṣṇiyeṣu

Compound kṛṣṇiya -

Adverb -kṛṣṇiyam -kṛṣṇiyāt