Declension table of ?kṛṣṇāyasa

Neuter	Singular	Dual	Plural
Nominative	kṛṣṇāyasam	kṛṣṇāyase	kṛṣṇāyasāni
Vocative	kṛṣṇāyasa	kṛṣṇāyase	kṛṣṇāyasāni
Accusative	kṛṣṇāyasam	kṛṣṇāyase	kṛṣṇāyasāni
Instrumental	kṛṣṇāyasena	kṛṣṇāyasābhyām	kṛṣṇāyasaiḥ
Dative	kṛṣṇāyasāya	kṛṣṇāyasābhyām	kṛṣṇāyasebhyaḥ
Ablative	kṛṣṇāyasāt	kṛṣṇāyasābhyām	kṛṣṇāyasebhyaḥ
Genitive	kṛṣṇāyasasya	kṛṣṇāyasayoḥ	kṛṣṇāyasānām
Locative	kṛṣṇāyase	kṛṣṇāyasayoḥ	kṛṣṇāyaseṣu

Compound kṛṣṇāyasa -

Adverb -kṛṣṇāyasam -kṛṣṇāyasāt