Sometimes the central space was square, sometimes octagonal, or at least there were eight piers supporting the dome instead of four, and the nave and transepts were narrower in proportion.
Alwaqqan iyyad edag wan ammas ogdah, alwăqqan iyyad šund octagon meɣ awa id orakan illan ti attamat tijjittawen it afnen dome war akkozat d nave d transept tan sadodnen