C11112331312111112111133133313331333132323213331333133313311212111112313231   >>    C1111233131211111211113313331333133313232321333133313331331121211111231323   <<    C11112331312111112111133133313331333132323213331333133313311212111112313233   >>      C11112331312111112111133133313331333132323213331333133313311212111112313232   >>