C11112331312111112111133133313331333133313331333133313331211113313223211311   >>    C1111233131211111211113313331333133313331333133313331333121111331322321131   <<    C11112331312111112111133133313331333133313331333133313331211113313223211313   >>      C11112331312111112111133133313331333133313331333133313331211113313223211312   >>