[BRLTTY] Cicero in German?

[Hermann]

Hi,
I observed some instability of speech-dispatcher with version 3.8dev. 
Sometimes SD crashes and cannot be restored unless I reboot my machine 
(SD version 0.6.2).
So I thought about changing to Cicero, which runs with mbrola, where 
German is also available.
I downloaded Cicero version 0.7.1, and in the readme file I read that it 
has been tested for French. In the package there are phoneme and 
pronounciation files for French (rules.fr checklist.fr).
Are there German files available, or is there another way to make Cicero 
with mbrola speak German?
Regards
Hermann