C:\test>1199987.pl
sanity test for correctness

        Rate   Two Three  Four   Six
Two   1.02/s    --   -4%   -5%  -58%
Three 1.06/s    4%    --   -1%  -57%
Four  1.08/s    5%    1%    --  -56%
Six   2.45/s  140%  131%  128%    --