Declension table of ?pratisvana

Masculine	Singular	Dual	Plural
Nominative	pratisvanaḥ	pratisvanau	pratisvanāḥ
Vocative	pratisvana	pratisvanau	pratisvanāḥ
Accusative	pratisvanam	pratisvanau	pratisvanān
Instrumental	pratisvanena	pratisvanābhyām	pratisvanaiḥ pratisvanebhiḥ
Dative	pratisvanāya	pratisvanābhyām	pratisvanebhyaḥ
Ablative	pratisvanāt	pratisvanābhyām	pratisvanebhyaḥ
Genitive	pratisvanasya	pratisvanayoḥ	pratisvanānām
Locative	pratisvane	pratisvanayoḥ	pratisvaneṣu

Compound pratisvana -

Adverb -pratisvanam -pratisvanāt