Declension table of ?herambamantra

Masculine	Singular	Dual	Plural
Nominative	herambamantraḥ	herambamantrau	herambamantrāḥ
Vocative	herambamantra	herambamantrau	herambamantrāḥ
Accusative	herambamantram	herambamantrau	herambamantrān
Instrumental	herambamantreṇa	herambamantrābhyām	herambamantraiḥ herambamantrebhiḥ
Dative	herambamantrāya	herambamantrābhyām	herambamantrebhyaḥ
Ablative	herambamantrāt	herambamantrābhyām	herambamantrebhyaḥ
Genitive	herambamantrasya	herambamantrayoḥ	herambamantrāṇām
Locative	herambamantre	herambamantrayoḥ	herambamantreṣu

Compound herambamantra -

Adverb -herambamantram -herambamantrāt