Declension table of ?vyayya

Masculine	Singular	Dual	Plural
Nominative	vyayyaḥ	vyayyau	vyayyāḥ
Vocative	vyayya	vyayyau	vyayyāḥ
Accusative	vyayyam	vyayyau	vyayyān
Instrumental	vyayyena	vyayyābhyām	vyayyaiḥ vyayyebhiḥ
Dative	vyayyāya	vyayyābhyām	vyayyebhyaḥ
Ablative	vyayyāt	vyayyābhyām	vyayyebhyaḥ
Genitive	vyayyasya	vyayyayoḥ	vyayyānām
Locative	vyayye	vyayyayoḥ	vyayyeṣu

Compound vyayya -

Adverb -vyayyam -vyayyāt