Declension table of pratarkya

Neuter	Singular	Dual	Plural
Nominative	pratarkyam	pratarkye	pratarkyāṇi
Vocative	pratarkya	pratarkye	pratarkyāṇi
Accusative	pratarkyam	pratarkye	pratarkyāṇi
Instrumental	pratarkyeṇa	pratarkyābhyām	pratarkyaiḥ
Dative	pratarkyāya	pratarkyābhyām	pratarkyebhyaḥ
Ablative	pratarkyāt	pratarkyābhyām	pratarkyebhyaḥ
Genitive	pratarkyasya	pratarkyayoḥ	pratarkyāṇām
Locative	pratarkye	pratarkyayoḥ	pratarkyeṣu

Compound pratarkya -

Adverb -pratarkyam -pratarkyāt