Declension table of ?pratisavya

Neuter	Singular	Dual	Plural
Nominative	pratisavyam	pratisavye	pratisavyāni
Vocative	pratisavya	pratisavye	pratisavyāni
Accusative	pratisavyam	pratisavye	pratisavyāni
Instrumental	pratisavyena	pratisavyābhyām	pratisavyaiḥ
Dative	pratisavyāya	pratisavyābhyām	pratisavyebhyaḥ
Ablative	pratisavyāt	pratisavyābhyām	pratisavyebhyaḥ
Genitive	pratisavyasya	pratisavyayoḥ	pratisavyānām
Locative	pratisavye	pratisavyayoḥ	pratisavyeṣu

Compound pratisavya -

Adverb -pratisavyam -pratisavyāt