Declension table of ?pramantra

Masculine	Singular	Dual	Plural
Nominative	pramantraḥ	pramantrau	pramantrāḥ
Vocative	pramantra	pramantrau	pramantrāḥ
Accusative	pramantram	pramantrau	pramantrān
Instrumental	pramantreṇa	pramantrābhyām	pramantraiḥ pramantrebhiḥ
Dative	pramantrāya	pramantrābhyām	pramantrebhyaḥ
Ablative	pramantrāt	pramantrābhyām	pramantrebhyaḥ
Genitive	pramantrasya	pramantrayoḥ	pramantrāṇām
Locative	pramantre	pramantrayoḥ	pramantreṣu

Compound pramantra -

Adverb -pramantram -pramantrāt