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In page Patriarchate:

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Nine of the current autocephalous Eastern Orthodox Churches, including the four ancient churches of Constantinople, Alexandria, Antioch and Jerusalem mentioned above, are organized as patriarchates. In chronological order of establishment, the other five are: Bulgarian Patriarchate (the oldest one following the Pentarchy), Georgian Patriarchate, Serbian Patriarchate, Moscow Patriarchate and Romanian Patriarchate.[citation needed]