Declension table of ?śumbhaniśumbha

Masculine	Singular	Dual	Plural
Nominative	śumbhaniśumbhaḥ	śumbhaniśumbhau	śumbhaniśumbhāḥ
Vocative	śumbhaniśumbha	śumbhaniśumbhau	śumbhaniśumbhāḥ
Accusative	śumbhaniśumbham	śumbhaniśumbhau	śumbhaniśumbhān
Instrumental	śumbhaniśumbhena	śumbhaniśumbhābhyām	śumbhaniśumbhaiḥ śumbhaniśumbhebhiḥ
Dative	śumbhaniśumbhāya	śumbhaniśumbhābhyām	śumbhaniśumbhebhyaḥ
Ablative	śumbhaniśumbhāt	śumbhaniśumbhābhyām	śumbhaniśumbhebhyaḥ
Genitive	śumbhaniśumbhasya	śumbhaniśumbhayoḥ	śumbhaniśumbhānām
Locative	śumbhaniśumbhe	śumbhaniśumbhayoḥ	śumbhaniśumbheṣu

Compound śumbhaniśumbha -

Adverb -śumbhaniśumbham -śumbhaniśumbhāt