C11112331312111112111133133313331333133313223223313121111133313132331211311   >>    C1111233131211111211113313331333133313331322322331312111113331313233121131   <<    C11112331312111112111133133313331333133313223223313121111133313132331211313   >>      C11112331312111112111133133313331333133313223223313121111133313132331211312   >>