Sanity Tests:
shoura:    >aaa bbb ccc<
kcott:     >aaa bbb ccc<
marshall:  >aaa bbb ccc<
      Rate    S    M    K
S 292306/s   -- -32% -37%
M 432626/s  48%   --  -7%
K 464863/s  59%   7%   --