Declension table of ?kūpya

Masculine	Singular	Dual	Plural
Nominative	kūpyaḥ	kūpyau	kūpyāḥ
Vocative	kūpya	kūpyau	kūpyāḥ
Accusative	kūpyam	kūpyau	kūpyān
Instrumental	kūpyena	kūpyābhyām	kūpyaiḥ kūpyebhiḥ
Dative	kūpyāya	kūpyābhyām	kūpyebhyaḥ
Ablative	kūpyāt	kūpyābhyām	kūpyebhyaḥ
Genitive	kūpyasya	kūpyayoḥ	kūpyānām
Locative	kūpye	kūpyayoḥ	kūpyeṣu

Compound kūpya -

Adverb -kūpyam -kūpyāt