Declension table of ?sumakha

Neuter	Singular	Dual	Plural
Nominative	sumakham	sumakhe	sumakhāni
Vocative	sumakha	sumakhe	sumakhāni
Accusative	sumakham	sumakhe	sumakhāni
Instrumental	sumakhena	sumakhābhyām	sumakhaiḥ
Dative	sumakhāya	sumakhābhyām	sumakhebhyaḥ
Ablative	sumakhāt	sumakhābhyām	sumakhebhyaḥ
Genitive	sumakhasya	sumakhayoḥ	sumakhānām
Locative	sumakhe	sumakhayoḥ	sumakheṣu

Compound sumakha -

Adverb -sumakham -sumakhāt