Declension table of ?sarvasasya

Neuter	Singular	Dual	Plural
Nominative	sarvasasyam	sarvasasye	sarvasasyāni
Vocative	sarvasasya	sarvasasye	sarvasasyāni
Accusative	sarvasasyam	sarvasasye	sarvasasyāni
Instrumental	sarvasasyena	sarvasasyābhyām	sarvasasyaiḥ
Dative	sarvasasyāya	sarvasasyābhyām	sarvasasyebhyaḥ
Ablative	sarvasasyāt	sarvasasyābhyām	sarvasasyebhyaḥ
Genitive	sarvasasyasya	sarvasasyayoḥ	sarvasasyānām
Locative	sarvasasye	sarvasasyayoḥ	sarvasasyeṣu

Compound sarvasasya -

Adverb -sarvasasyam -sarvasasyāt