Declension table of ?kopayamāna

Masculine	Singular	Dual	Plural
Nominative	kopayamānaḥ	kopayamānau	kopayamānāḥ
Vocative	kopayamāna	kopayamānau	kopayamānāḥ
Accusative	kopayamānam	kopayamānau	kopayamānān
Instrumental	kopayamānena	kopayamānābhyām	kopayamānaiḥ kopayamānebhiḥ
Dative	kopayamānāya	kopayamānābhyām	kopayamānebhyaḥ
Ablative	kopayamānāt	kopayamānābhyām	kopayamānebhyaḥ
Genitive	kopayamānasya	kopayamānayoḥ	kopayamānānām
Locative	kopayamāne	kopayamānayoḥ	kopayamāneṣu

Compound kopayamāna -

Adverb -kopayamānam -kopayamānāt