C11112331312111112111133133313331333132323133313331312113313223332311   >>    C1111233131211111211113313331333133313232313331333131211331322333231   <<    C11112331312111112111133133313331333132323133313331312113313223332313   >>      C11112331312111112111133133313331333132323133313331312113313223332312   >>