$ perl demo2.pl haukex 1
Found at 999999
Found at 1000000
duration (haukex):  0.336 seconds

$ perl demo2.pl karlary 1
Found at 999999
Found at 1000000
duration (karlary): 0.231 seconds

$ perl demo2.pl karlseq 1
Found at 999999
Found at 1000000
duration (karlseq): 0.122 seconds