C11112331312111112111133133313331333132323213331333133313223313113311211311   >>    C1111233131211111211113313331333133313232321333133313331322331311331121131   <<    C11112331312111112111133133313331333132323213331333133313223313113311211313   >>      C11112331312111112111133133313331333132323213331333133313223313113311211312   >>