C11112331312111112111133133313331333132323133313331331123232331121   >>    C1111233131211111211113313331333133313232313331333133112323233112   <<    C11112331312111112111133133313331333132323133313331331123232331123   >>      C11112331312111112111133133313331333132323133313331331123232331122   >>