C1111121111331311211331333133313331333133313231333133313232133313333121   >>    C111112111133131121133133313331333133313331323133313331323213331333312   <<    C1111121111331311211331333133313331333133313231333133313232133313333123   >>      C1111121111331311211331333133313331333133313231333133313232133313333122   >>