C3123121111331312121111331333132313331333133313331333112112233223231   >>    C312312111133131212111133133313231333133313331333133311211223322323   <<    C3123121111331312121111331333132313331333133313331333112112233223233   >>      C3123121111331312121111331333132313331333133313331333112112233223232   >>