Declension table of ?viṣka

Masculine	Singular	Dual	Plural
Nominative	viṣkaḥ	viṣkau	viṣkāḥ
Vocative	viṣka	viṣkau	viṣkāḥ
Accusative	viṣkam	viṣkau	viṣkān
Instrumental	viṣkeṇa	viṣkābhyām	viṣkaiḥ viṣkebhiḥ
Dative	viṣkāya	viṣkābhyām	viṣkebhyaḥ
Ablative	viṣkāt	viṣkābhyām	viṣkebhyaḥ
Genitive	viṣkasya	viṣkayoḥ	viṣkāṇām
Locative	viṣke	viṣkayoḥ	viṣkeṣu

Compound viṣka -

Adverb -viṣkam -viṣkāt