C11112331312111112111133133313331333132323213311211111333131311311   >>    C1111233131211111211113313331333133313232321331121111133313131131   <<    C11112331312111112111133133313331333132323213311211111333131311313   >>      C11112331312111112111133133313331333132323213311211111333131311312   >>