C11112331312111112111133133313331333132323133313331333133313311211111311313231   >>    C1111233131211111211113313331333133313232313331333133313331331121111131131323   <<    C11112331312111112111133133313331333132323133313331333133313311211111311313233   >>      C11112331312111112111133133313331333132323133313331333133313311211111311313232   >>