Declension table of ?viṣṇudevatya

Masculine	Singular	Dual	Plural
Nominative	viṣṇudevatyaḥ	viṣṇudevatyau	viṣṇudevatyāḥ
Vocative	viṣṇudevatya	viṣṇudevatyau	viṣṇudevatyāḥ
Accusative	viṣṇudevatyam	viṣṇudevatyau	viṣṇudevatyān
Instrumental	viṣṇudevatyena	viṣṇudevatyābhyām	viṣṇudevatyaiḥ viṣṇudevatyebhiḥ
Dative	viṣṇudevatyāya	viṣṇudevatyābhyām	viṣṇudevatyebhyaḥ
Ablative	viṣṇudevatyāt	viṣṇudevatyābhyām	viṣṇudevatyebhyaḥ
Genitive	viṣṇudevatyasya	viṣṇudevatyayoḥ	viṣṇudevatyānām
Locative	viṣṇudevatye	viṣṇudevatyayoḥ	viṣṇudevatyeṣu

Compound viṣṇudevatya -

Adverb -viṣṇudevatyam -viṣṇudevatyāt