Declension table of ?umbhya

Neuter	Singular	Dual	Plural
Nominative	umbhyam	umbhye	umbhyāni
Vocative	umbhya	umbhye	umbhyāni
Accusative	umbhyam	umbhye	umbhyāni
Instrumental	umbhyena	umbhyābhyām	umbhyaiḥ
Dative	umbhyāya	umbhyābhyām	umbhyebhyaḥ
Ablative	umbhyāt	umbhyābhyām	umbhyebhyaḥ
Genitive	umbhyasya	umbhyayoḥ	umbhyānām
Locative	umbhye	umbhyayoḥ	umbhyeṣu

Compound umbhya -

Adverb -umbhyam -umbhyāt