Declension table of ?tvāyu

Masculine	Singular	Dual	Plural
Nominative	tvāyuḥ	tvāyū	tvāyavaḥ
Vocative	tvāyo	tvāyū	tvāyavaḥ
Accusative	tvāyum	tvāyū	tvāyūn
Instrumental	tvāyunā	tvāyubhyām	tvāyubhiḥ
Dative	tvāyave	tvāyubhyām	tvāyubhyaḥ
Ablative	tvāyoḥ	tvāyubhyām	tvāyubhyaḥ
Genitive	tvāyoḥ	tvāyvoḥ	tvāyūnām
Locative	tvāyau	tvāyvoḥ	tvāyuṣu

Compound tvāyu -

Adverb -tvāyu