Declension table of ?sasasya

Neuter	Singular	Dual	Plural
Nominative	sasasyam	sasasye	sasasyāni
Vocative	sasasya	sasasye	sasasyāni
Accusative	sasasyam	sasasye	sasasyāni
Instrumental	sasasyena	sasasyābhyām	sasasyaiḥ
Dative	sasasyāya	sasasyābhyām	sasasyebhyaḥ
Ablative	sasasyāt	sasasyābhyām	sasasyebhyaḥ
Genitive	sasasyasya	sasasyayoḥ	sasasyānām
Locative	sasasye	sasasyayoḥ	sasasyeṣu

Compound sasasya -

Adverb -sasasyam -sasasyāt