C111112111133131121133133313331333133313331323112331333133313232121   >>    C11111211113313112113313331333133313331333132311233133313331323212   <<    C111112111133131121133133313331333133313331323112331333133313232123   >>      C111112111133131121133133313331333133313331323112331333133313232122   >>