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Flag proposals:
Not sure if the upside-down cross should rather be distinguished from the upside-down crescent, but I'm open to any suggestions.
I. Replace the green and black in the first flag.
II. Try to add “ إبليس ” to the second flag (if you are not good with calligraphy you can leave it).
III. Possible coat of arms basis.
I reversed the colours of the top flag, but while I tried, even Kufic is a bit too much to master late in the evening. (I don't even attempt any more complex scripts.)