C111112111133131121133133313331333133313331323133313331323113121211   >>    C11111211113313112113313331333133313331333132313331333132311312121   <<    C111112111133131121133133313331333133313331323133313331323113121213   >>      C111112111133131121133133313331333133313331323133313331323113121212   >>