Declension table of ?yasya

Masculine	Singular	Dual	Plural
Nominative	yasyaḥ	yasyau	yasyāḥ
Vocative	yasya	yasyau	yasyāḥ
Accusative	yasyam	yasyau	yasyān
Instrumental	yasyena	yasyābhyām	yasyaiḥ yasyebhiḥ
Dative	yasyāya	yasyābhyām	yasyebhyaḥ
Ablative	yasyāt	yasyābhyām	yasyebhyaḥ
Genitive	yasyasya	yasyayoḥ	yasyānām
Locative	yasye	yasyayoḥ	yasyeṣu

Compound yasya -

Adverb -yasyam -yasyāt