Declension table of ?mantranetra

Neuter	Singular	Dual	Plural
Nominative	mantranetram	mantranetre	mantranetrāṇi
Vocative	mantranetra	mantranetre	mantranetrāṇi
Accusative	mantranetram	mantranetre	mantranetrāṇi
Instrumental	mantranetreṇa	mantranetrābhyām	mantranetraiḥ
Dative	mantranetrāya	mantranetrābhyām	mantranetrebhyaḥ
Ablative	mantranetrāt	mantranetrābhyām	mantranetrebhyaḥ
Genitive	mantranetrasya	mantranetrayoḥ	mantranetrāṇām
Locative	mantranetre	mantranetrayoḥ	mantranetreṣu

Compound mantranetra -

Adverb -mantranetram -mantranetrāt