Declension table of sumitra

Neuter	Singular	Dual	Plural
Nominative	sumitram	sumitre	sumitrāṇi
Vocative	sumitra	sumitre	sumitrāṇi
Accusative	sumitram	sumitre	sumitrāṇi
Instrumental	sumitreṇa	sumitrābhyām	sumitraiḥ
Dative	sumitrāya	sumitrābhyām	sumitrebhyaḥ
Ablative	sumitrāt	sumitrābhyām	sumitrebhyaḥ
Genitive	sumitrasya	sumitrayoḥ	sumitrāṇām
Locative	sumitre	sumitrayoḥ	sumitreṣu

Compound sumitra -

Adverb -sumitram -sumitrāt