Declension table of ?pratyenasya

Neuter	Singular	Dual	Plural
Nominative	pratyenasyam	pratyenasye	pratyenasyāni
Vocative	pratyenasya	pratyenasye	pratyenasyāni
Accusative	pratyenasyam	pratyenasye	pratyenasyāni
Instrumental	pratyenasyena	pratyenasyābhyām	pratyenasyaiḥ
Dative	pratyenasyāya	pratyenasyābhyām	pratyenasyebhyaḥ
Ablative	pratyenasyāt	pratyenasyābhyām	pratyenasyebhyaḥ
Genitive	pratyenasyasya	pratyenasyayoḥ	pratyenasyānām
Locative	pratyenasye	pratyenasyayoḥ	pratyenasyeṣu

Compound pratyenasya -

Adverb -pratyenasyam -pratyenasyāt