Declension table of ?kṛṣṇayat

Masculine	Singular	Dual	Plural
Nominative	kṛṣṇayan	kṛṣṇayantau	kṛṣṇayantaḥ
Vocative	kṛṣṇayan	kṛṣṇayantau	kṛṣṇayantaḥ
Accusative	kṛṣṇayantam	kṛṣṇayantau	kṛṣṇayataḥ
Instrumental	kṛṣṇayatā	kṛṣṇayadbhyām	kṛṣṇayadbhiḥ
Dative	kṛṣṇayate	kṛṣṇayadbhyām	kṛṣṇayadbhyaḥ
Ablative	kṛṣṇayataḥ	kṛṣṇayadbhyām	kṛṣṇayadbhyaḥ
Genitive	kṛṣṇayataḥ	kṛṣṇayatoḥ	kṛṣṇayatām
Locative	kṛṣṇayati	kṛṣṇayatoḥ	kṛṣṇayatsu

Compound kṛṣṇayat -

Adverb -kṛṣṇayantam