C3132121111331312113313331333133313331333132313331333133313331313232213231   >>    C313212111133131211331333133313331333133313231333133313331333131323221323   <<    C3132121111331312113313331333133313331333132313331333133313331313232213233   >>      C3132121111331312113313331333133313331333132313331333133313331313232213232   >>