Declension table of ?sanmitra

Neuter	Singular	Dual	Plural
Nominative	sanmitram	sanmitre	sanmitrāṇi
Vocative	sanmitra	sanmitre	sanmitrāṇi
Accusative	sanmitram	sanmitre	sanmitrāṇi
Instrumental	sanmitreṇa	sanmitrābhyām	sanmitraiḥ
Dative	sanmitrāya	sanmitrābhyām	sanmitrebhyaḥ
Ablative	sanmitrāt	sanmitrābhyām	sanmitrebhyaḥ
Genitive	sanmitrasya	sanmitrayoḥ	sanmitrāṇām
Locative	sanmitre	sanmitrayoḥ	sanmitreṣu

Compound sanmitra -

Adverb -sanmitram -sanmitrāt