Declension table of ?kāthakya

Masculine	Singular	Dual	Plural
Nominative	kāthakyaḥ	kāthakyau	kāthakyāḥ
Vocative	kāthakya	kāthakyau	kāthakyāḥ
Accusative	kāthakyam	kāthakyau	kāthakyān
Instrumental	kāthakyena	kāthakyābhyām	kāthakyaiḥ kāthakyebhiḥ
Dative	kāthakyāya	kāthakyābhyām	kāthakyebhyaḥ
Ablative	kāthakyāt	kāthakyābhyām	kāthakyebhyaḥ
Genitive	kāthakyasya	kāthakyayoḥ	kāthakyānām
Locative	kāthakye	kāthakyayoḥ	kāthakyeṣu

Compound kāthakya -

Adverb -kāthakyam -kāthakyāt