Benchmarks:
    Note: Unordered data extended with 'map "a-$_", shuffle 0..10000'
           Rate    STra     STr    STrn   STran  STraen   STren  GRTpeq   GRTpe    mcsl     mcs   sra    sp    sr    ss
STra     69.0/s      --     -0%     -0%     -1%     -1%     -2%    -52%    -52%    -58%    -60% -100% -100% -100% -100%
STr      69.3/s      0%      --     -0%     -1%     -1%     -1%    -52%    -52%    -58%    -60% -100% -100% -100% -100%
STrn     69.3/s      0%      0%      --     -1%     -1%     -1%    -51%    -52%    -58%    -60% -100% -100% -100% -100%
STran    69.7/s      1%      1%      1%      --     -0%     -1%    -51%    -51%    -58%    -60% -100% -100% -100% -100%
STraen   69.7/s      1%      1%      1%      0%      --     -0%    -51%    -51%    -58%    -60% -100% -100% -100% -100%
STren    70.1/s      2%      1%      1%      1%      0%      --    -51%    -51%    -58%    -59% -100% -100% -100% -100%
GRTpeq    143/s    107%    106%    106%    105%    105%    104%      --     -0%    -14%    -17% -100% -100% -100% -100%
GRTpe     144/s    108%    107%    107%    106%    106%    105%      0%      --    -14%    -17% -100% -100% -100% -100%
mcsl      166/s    141%    140%    140%    138%    138%    137%     16%     16%      --     -4% -100% -100% -100% -100%
mcs       173/s    150%    149%    149%    148%    148%    146%     21%     20%      4%      -- -100% -100% -100% -100%
sra    269609/s 390588% 389108% 388890% 386666% 386573% 384706% 188564% 187751% 162119% 156078%    --   -1%   -1%   -1%
sp     271738/s 393672% 392181% 391961% 389720% 389626% 387744% 190053% 189234% 163400% 157311%    1%    --   -1%   -1%
sr     273197/s 395787% 394288% 394067% 391813% 391719% 389826% 191074% 190251% 164278% 158157%    1%    1%    --   -0%
ss     273197/s 395787% 394288% 394067% 391813% 391719% 389826% 191074% 190251% 164278% 158157%    1%    1%    0%    --