Declension table of ?rādhāmantra

Masculine	Singular	Dual	Plural
Nominative	rādhāmantraḥ	rādhāmantrau	rādhāmantrāḥ
Vocative	rādhāmantra	rādhāmantrau	rādhāmantrāḥ
Accusative	rādhāmantram	rādhāmantrau	rādhāmantrān
Instrumental	rādhāmantreṇa	rādhāmantrābhyām	rādhāmantraiḥ rādhāmantrebhiḥ
Dative	rādhāmantrāya	rādhāmantrābhyām	rādhāmantrebhyaḥ
Ablative	rādhāmantrāt	rādhāmantrābhyām	rādhāmantrebhyaḥ
Genitive	rādhāmantrasya	rādhāmantrayoḥ	rādhāmantrāṇām
Locative	rādhāmantre	rādhāmantrayoḥ	rādhāmantreṣu

Compound rādhāmantra -

Adverb -rādhāmantram -rādhāmantrāt