Declension table of ?gauramantra

Masculine	Singular	Dual	Plural
Nominative	gauramantraḥ	gauramantrau	gauramantrāḥ
Vocative	gauramantra	gauramantrau	gauramantrāḥ
Accusative	gauramantram	gauramantrau	gauramantrān
Instrumental	gauramantreṇa	gauramantrābhyām	gauramantraiḥ gauramantrebhiḥ
Dative	gauramantrāya	gauramantrābhyām	gauramantrebhyaḥ
Ablative	gauramantrāt	gauramantrābhyām	gauramantrebhyaḥ
Genitive	gauramantrasya	gauramantrayoḥ	gauramantrāṇām
Locative	gauramantre	gauramantrayoḥ	gauramantreṣu

Compound gauramantra -

Adverb -gauramantram -gauramantrāt