MASCULINE FEMININE NEUTER SINGULAR NOM. ferreus ferrea ferreum GEN. ferrei ferreae ferrei DAT. ferreo ferreae ferreo ACC. ferreum ferream ferreum ABL. ferreo ferrea ferreo PLURAL NOM. ferrei ferreae ferrea GEN. ferreorum ferrearum ferreorum DAT. ferreis ferreis ferreis ACC. ferreos ferreas ferrea ABL. ferreis ferreis ferreis