TTDUL6JB5MOFWHP5GCI6NKQAFIVXNAM6VEKSW5RQFFTYWOBXMFHQC
3AKZKWCRQZTASQO5BZ4KCEFJ5OMP7LVF6YOPDJN5KCRIZIW75MCAC
or die("Can't open \$filename\": $!\n");
or die("Can't open \"$filename\": $!\n");