Declension table of ?samunna

Neuter	Singular	Dual	Plural
Nominative	samunnam	samunne	samunnāni
Vocative	samunna	samunne	samunnāni
Accusative	samunnam	samunne	samunnāni
Instrumental	samunnena	samunnābhyām	samunnaiḥ
Dative	samunnāya	samunnābhyām	samunnebhyaḥ
Ablative	samunnāt	samunnābhyām	samunnebhyaḥ
Genitive	samunnasya	samunnayoḥ	samunnānām
Locative	samunne	samunnayoḥ	samunneṣu

Compound samunna -

Adverb -samunnam -samunnāt