C11112331312111112111133133313331333132323213331333133312111133133313311232311   >>    C1111233131211111211113313331333133313232321333133313331211113313331331123231   <<    C11112331312111112111133133313331333132323213331333133312111133133313311232313   >>      C11112331312111112111133133313331333132323213331333133312111133133313311232312   >>