C11112331312111112111133133313331333132323133313331333133321223213311   >>    C1111233131211111211113313331333133313232313331333133313332122321331   <<    C11112331312111112111133133313331333132323133313331333133321223213313   >>      C11112331312111112111133133313331333132323133313331333133321223213312   >>