Declension table of ?atyantakopana

Neuter	Singular	Dual	Plural
Nominative	atyantakopanam	atyantakopane	atyantakopanāni
Vocative	atyantakopana	atyantakopane	atyantakopanāni
Accusative	atyantakopanam	atyantakopane	atyantakopanāni
Instrumental	atyantakopanena	atyantakopanābhyām	atyantakopanaiḥ
Dative	atyantakopanāya	atyantakopanābhyām	atyantakopanebhyaḥ
Ablative	atyantakopanāt	atyantakopanābhyām	atyantakopanebhyaḥ
Genitive	atyantakopanasya	atyantakopanayoḥ	atyantakopanānām
Locative	atyantakopane	atyantakopanayoḥ	atyantakopaneṣu

Compound atyantakopana -

Adverb -atyantakopanam -atyantakopanāt