C11112331312111112111133133313331333132323213331333133313131222231   >>    C1111233131211111211113313331333133313232321333133313331313122223   <<    C11112331312111112111133133313331333132323213331333133313131222233   >>      C11112331312111112111133133313331333132323213331333133313131222232   >>