Declension table of ?kṛṣṇajanaka

Masculine	Singular	Dual	Plural
Nominative	kṛṣṇajanakaḥ	kṛṣṇajanakau	kṛṣṇajanakāḥ
Vocative	kṛṣṇajanaka	kṛṣṇajanakau	kṛṣṇajanakāḥ
Accusative	kṛṣṇajanakam	kṛṣṇajanakau	kṛṣṇajanakān
Instrumental	kṛṣṇajanakena	kṛṣṇajanakābhyām	kṛṣṇajanakaiḥ kṛṣṇajanakebhiḥ
Dative	kṛṣṇajanakāya	kṛṣṇajanakābhyām	kṛṣṇajanakebhyaḥ
Ablative	kṛṣṇajanakāt	kṛṣṇajanakābhyām	kṛṣṇajanakebhyaḥ
Genitive	kṛṣṇajanakasya	kṛṣṇajanakayoḥ	kṛṣṇajanakānām
Locative	kṛṣṇajanake	kṛṣṇajanakayoḥ	kṛṣṇajanakeṣu

Compound kṛṣṇajanaka -

Adverb -kṛṣṇajanakam -kṛṣṇajanakāt