C11112331312111112111133133313331333132323213331333133313311212111113331111   >>    C1111233131211111211113313331333133313232321333133313331331121211111333111   <<    C11112331312111112111133133313331333132323213331333133313311212111113331113   >>      C11112331312111112111133133313331333132323213331333133313311212111113331112   >>