Declension table of ?payasya

Neuter	Singular	Dual	Plural
Nominative	payasyam	payasye	payasyāni
Vocative	payasya	payasye	payasyāni
Accusative	payasyam	payasye	payasyāni
Instrumental	payasyena	payasyābhyām	payasyaiḥ
Dative	payasyāya	payasyābhyām	payasyebhyaḥ
Ablative	payasyāt	payasyābhyām	payasyebhyaḥ
Genitive	payasyasya	payasyayoḥ	payasyānām
Locative	payasye	payasyayoḥ	payasyeṣu

Compound payasya -

Adverb -payasyam -payasyāt