Declension table of ?kāsya

Masculine	Singular	Dual	Plural
Nominative	kāsyaḥ	kāsyau	kāsyāḥ
Vocative	kāsya	kāsyau	kāsyāḥ
Accusative	kāsyam	kāsyau	kāsyān
Instrumental	kāsyena	kāsyābhyām	kāsyaiḥ kāsyebhiḥ
Dative	kāsyāya	kāsyābhyām	kāsyebhyaḥ
Ablative	kāsyāt	kāsyābhyām	kāsyebhyaḥ
Genitive	kāsyasya	kāsyayoḥ	kāsyānām
Locative	kāsye	kāsyayoḥ	kāsyeṣu

Compound kāsya -

Adverb -kāsyam -kāsyāt