C111112111133131121133133313331333133313331323133313331323133313331311221123111   >>    C11111211113313112113313331333133313331333132313331333132313331333131122112311   <<    C111112111133131121133133313331333133313331323133313331323133313331311221123113   >>      C111112111133131121133133313331333133313331323133313331323133313331311221123112   >>