C11112331312111112111133133313331333132323213331333133313113211312123332311   >>    C1111233131211111211113313331333133313232321333133313331311321131212333231   <<    C11112331312111112111133133313331333132323213331333133313113211312123332313   >>      C11112331312111112111133133313331333132323213331333133313113211312123332312   >>