Declension table of ?kṛṣṇagupta

Masculine	Singular	Dual	Plural
Nominative	kṛṣṇaguptaḥ	kṛṣṇaguptau	kṛṣṇaguptāḥ
Vocative	kṛṣṇagupta	kṛṣṇaguptau	kṛṣṇaguptāḥ
Accusative	kṛṣṇaguptam	kṛṣṇaguptau	kṛṣṇaguptān
Instrumental	kṛṣṇaguptena	kṛṣṇaguptābhyām	kṛṣṇaguptaiḥ kṛṣṇaguptebhiḥ
Dative	kṛṣṇaguptāya	kṛṣṇaguptābhyām	kṛṣṇaguptebhyaḥ
Ablative	kṛṣṇaguptāt	kṛṣṇaguptābhyām	kṛṣṇaguptebhyaḥ
Genitive	kṛṣṇaguptasya	kṛṣṇaguptayoḥ	kṛṣṇaguptānām
Locative	kṛṣṇagupte	kṛṣṇaguptayoḥ	kṛṣṇagupteṣu

Compound kṛṣṇagupta -

Adverb -kṛṣṇaguptam -kṛṣṇaguptāt