Declension table of ?kathya

Masculine	Singular	Dual	Plural
Nominative	kathyaḥ	kathyau	kathyāḥ
Vocative	kathya	kathyau	kathyāḥ
Accusative	kathyam	kathyau	kathyān
Instrumental	kathyena	kathyābhyām	kathyaiḥ kathyebhiḥ
Dative	kathyāya	kathyābhyām	kathyebhyaḥ
Ablative	kathyāt	kathyābhyām	kathyebhyaḥ
Genitive	kathyasya	kathyayoḥ	kathyānām
Locative	kathye	kathyayoḥ	kathyeṣu

Compound kathya -

Adverb -kathyam -kathyāt