C11112331312111112111133133313331333132323213311211111121323311   >>    C1111233131211111211113313331333133313232321331121111112132331   <<    C11112331312111112111133133313331333132323213311211111121323313   >>      C11112331312111112111133133313331333132323213311211111121323312   >>