C11112331312111112111133133313331333133313223223313121111332321311   >>    C1111233131211111211113313331333133313331322322331312111133232131   <<    C11112331312111112111133133313331333133313223223313121111332321313   >>      C11112331312111112111133133313331333133313223223313121111332321312   >>