Declension table of ?māntra

Masculine	Singular	Dual	Plural
Nominative	māntraḥ	māntrau	māntrāḥ
Vocative	māntra	māntrau	māntrāḥ
Accusative	māntram	māntrau	māntrān
Instrumental	māntreṇa	māntrābhyām	māntraiḥ
Dative	māntrāya	māntrābhyām	māntrebhyaḥ
Ablative	māntrāt	māntrābhyām	māntrebhyaḥ
Genitive	māntrasya	māntrayoḥ	māntrāṇām
Locative	māntre	māntrayoḥ	māntreṣu

Compound māntra -

Adverb -māntram -māntrāt