Declension table of ?kumbhya

Neuter	Singular	Dual	Plural
Nominative	kumbhyam	kumbhye	kumbhyāni
Vocative	kumbhya	kumbhye	kumbhyāni
Accusative	kumbhyam	kumbhye	kumbhyāni
Instrumental	kumbhyena	kumbhyābhyām	kumbhyaiḥ
Dative	kumbhyāya	kumbhyābhyām	kumbhyebhyaḥ
Ablative	kumbhyāt	kumbhyābhyām	kumbhyebhyaḥ
Genitive	kumbhyasya	kumbhyayoḥ	kumbhyānām
Locative	kumbhye	kumbhyayoḥ	kumbhyeṣu

Compound kumbhya -

Adverb -kumbhyam -kumbhyāt