Declension table of ?pratyarcana

Neuter	Singular	Dual	Plural
Nominative	pratyarcanam	pratyarcane	pratyarcanāni
Vocative	pratyarcana	pratyarcane	pratyarcanāni
Accusative	pratyarcanam	pratyarcane	pratyarcanāni
Instrumental	pratyarcanena	pratyarcanābhyām	pratyarcanaiḥ
Dative	pratyarcanāya	pratyarcanābhyām	pratyarcanebhyaḥ
Ablative	pratyarcanāt	pratyarcanābhyām	pratyarcanebhyaḥ
Genitive	pratyarcanasya	pratyarcanayoḥ	pratyarcanānām
Locative	pratyarcane	pratyarcanayoḥ	pratyarcaneṣu

Compound pratyarcana -

Adverb -pratyarcanam -pratyarcanāt