C111112111133131121133133313331323133313311211113313331333133313232311   >>    C11111211113313112113313331333132313331331121111331333133313331323231   <<    C111112111133131121133133313331323133313311211113313331333133313232313   >>      C111112111133131121133133313331323133313311211113313331333133313232312   >>