C11112331312111112111133133313331333132323133313331331123231321111   >>    C1111233131211111211113313331333133313232313331333133112323132111   <<    C11112331312111112111133133313331333132323133313331331123231321113   >>      C11112331312111112111133133313331333132323133313331331123231321112   >>