Benchmark: running lc, regex for at least 30 CPU seconds...
        lc: 34.068 wallclock secs (34.10 usr  0.00 sys +  0.00 cusr  0.00 csys = 34.10 CPU) @ 19917.24/s (n=679178)
     regex: 31.518 wallclock secs (31.53 usr  0.00 sys +  0.00 cusr  0.00 csys = 31.53 CPU) @ 13689.50/s (n=431630)
         Rate regex    lc
regex 13690/s    --  -31%
lc    19917/s   45%    --