C111112111133131121133133313331333133313331323133313331333133313331121111212121   >>    C11111211113313112113313331333133313331333132313331333133313331333112111121212   <<    C111112111133131121133133313331333133313331323133313331333133313331121111212123   >>      C111112111133131121133133313331333133313331323133313331333133313331121111212122   >>