Declension table of ?mantritva

Neuter	Singular	Dual	Plural
Nominative	mantritvam	mantritve	mantritvāni
Vocative	mantritva	mantritve	mantritvāni
Accusative	mantritvam	mantritve	mantritvāni
Instrumental	mantritvena	mantritvābhyām	mantritvaiḥ
Dative	mantritvāya	mantritvābhyām	mantritvebhyaḥ
Ablative	mantritvāt	mantritvābhyām	mantritvebhyaḥ
Genitive	mantritvasya	mantritvayoḥ	mantritvānām
Locative	mantritve	mantritvayoḥ	mantritveṣu

Compound mantritva -

Adverb -mantritvam -mantritvāt