Declension table of ?pratyuttara

Neuter	Singular	Dual	Plural
Nominative	pratyuttaram	pratyuttare	pratyuttarāṇi
Vocative	pratyuttara	pratyuttare	pratyuttarāṇi
Accusative	pratyuttaram	pratyuttare	pratyuttarāṇi
Instrumental	pratyuttareṇa	pratyuttarābhyām	pratyuttaraiḥ
Dative	pratyuttarāya	pratyuttarābhyām	pratyuttarebhyaḥ
Ablative	pratyuttarāt	pratyuttarābhyām	pratyuttarebhyaḥ
Genitive	pratyuttarasya	pratyuttarayoḥ	pratyuttarāṇām
Locative	pratyuttare	pratyuttarayoḥ	pratyuttareṣu

Compound pratyuttara -

Adverb -pratyuttaram -pratyuttarāt