C11112331312111112111133133313331333133313223223313231322333121121   >>    C1111233131211111211113313331333133313331322322331323132233312112   <<    C11112331312111112111133133313331333133313223223313231322333121123   >>      C11112331312111112111133133313331333133313223223313231322333121122   >>