C11112331312111112111133133313331333132323213331333133313331311222331121   >>    C1111233131211111211113313331333133313232321333133313331333131122233112   <<    C11112331312111112111133133313331333132323213331333133313331311222331123   >>      C11112331312111112111133133313331333132323213331333133313331311222331122   >>