C11112331312111112111133133313331333132323213331333133313113133313211   >>    C1111233131211111211113313331333133313232321333133313331311313331321   <<    C11112331312111112111133133313331333132323213331333133313113133313213   >>      C11112331312111112111133133313331333132323213331333133313113133313212   >>