What are the shabd roop of katha?

"Katha" is a feminine noun in Sanskrit. The shabd roop of "katha" in different cases are: Prathama (Nominative) - katha, Dvitiya (Accusative) - katham, Tritiya (Instrumental) - kathā, Chaturthi (Dative) - kathāyaḥ, Panchami (Ablative) - kathāt.