Declension table of ?kasyamāna

Neuter	Singular	Dual	Plural
Nominative	kasyamānam	kasyamāne	kasyamānāni
Vocative	kasyamāna	kasyamāne	kasyamānāni
Accusative	kasyamānam	kasyamāne	kasyamānāni
Instrumental	kasyamānena	kasyamānābhyām	kasyamānaiḥ
Dative	kasyamānāya	kasyamānābhyām	kasyamānebhyaḥ
Ablative	kasyamānāt	kasyamānābhyām	kasyamānebhyaḥ
Genitive	kasyamānasya	kasyamānayoḥ	kasyamānānām
Locative	kasyamāne	kasyamānayoḥ	kasyamāneṣu

Compound kasyamāna -

Adverb -kasyamānam -kasyamānāt