Declension table of ?vasyas

Masculine	Singular	Dual	Plural
Nominative	vasyān	vasyāṃsau	vasyāṃsaḥ
Vocative	vasyan	vasyāṃsau	vasyāṃsaḥ
Accusative	vasyāṃsam	vasyāṃsau	vasyasaḥ
Instrumental	vasyasā	vasyobhyām	vasyobhiḥ
Dative	vasyase	vasyobhyām	vasyobhyaḥ
Ablative	vasyasaḥ	vasyobhyām	vasyobhyaḥ
Genitive	vasyasaḥ	vasyasoḥ	vasyasām
Locative	vasyasi	vasyasoḥ	vasyaḥsu

Compound vasyas -

Adverb -vasyas