What positions in the College of Cardinals can Eastern Patriarch Cardinals not vote for?

Some Eastern Patriarchs in the Catholic Church are also Cardinals. Given that they are otherwise eligible, they can participate in the Conclave to elect the pope. However, they specifically *cannot* elect the [Dean of the College of Cardinals](https://en.wikipedia.org/wiki/Dean_of_the_College_of_Cardinals) . I was not aware that their voting rights were abridged in this manner. This led me to ask... What other positions in the College of Cardinals can the Eastern Patriarch Cardinals *not* vote for?