C11112331312111112111133133313331333132323213331333133313311212111133232221   >>    C1111233131211111211113313331333133313232321333133313331331121211113323222   <<    C11112331312111112111133133313331333132323213331333133313311212111133232223   >>      C11112331312111112111133133313331333132323213331333133313311212111133232222   >>