C11112331312111112111133133313331333133313223223313231323133313232223323311321   >>    C1111233131211111211113313331333133313331322322331323132313331323222332331132   <<    C11112331312111112111133133313331333133313223223313231323133313232223323311323   >>      C11112331312111112111133133313331333133313223223313231323133313232223323311322   >>