$ perl pm_1196786.pl
131, keys 131
str: 131
131, keys 131
stj: 131
big: 131
pak: 131
dbl: 131
Benchmark: timing 200000 iterations of BigA, BigB, BigC, DblA, DblB, DblC, PakA, PakB, PakC, StjA, StjB, StjC, StrA, StrB, StrC...
      BigA:  7 wallclock secs ( 6.51 usr +  0.00 sys =  6.51 CPU) @ 30698.39/s (n=200000)
      BigB: 13 wallclock secs (12.95 usr +  0.00 sys = 12.95 CPU) @ 15439.25/s (n=200000)
      BigC: 19 wallclock secs (18.97 usr +  0.00 sys = 18.97 CPU) @ 10543.52/s (n=200000)
      DblA:  6 wallclock secs ( 6.50 usr +  0.00 sys =  6.50 CPU) @ 30773.97/s (n=200000)
      DblB: 10 wallclock secs ( 9.23 usr +  0.00 sys =  9.23 CPU) @ 21659.09/s (n=200000)
      DblC: 12 wallclock secs (11.97 usr +  0.00 sys = 11.97 CPU) @ 16709.83/s (n=200000)
      PakA:  6 wallclock secs ( 6.31 usr +  0.00 sys =  6.31 CPU) @ 31685.68/s (n=200000)
      PakB: 13 wallclock secs (12.45 usr +  0.00 sys = 12.45 CPU) @ 16060.39/s (n=200000)
      PakC: 18 wallclock secs (18.34 usr +  0.00 sys = 18.34 CPU) @ 10902.75/s (n=200000)
      StjA:  7 wallclock secs ( 6.91 usr +  0.00 sys =  6.91 CPU) @ 28960.32/s (n=200000)
      StjB: 14 wallclock secs (13.56 usr +  0.00 sys = 13.56 CPU) @ 14746.00/s (n=200000)
      StjC: 20 wallclock secs (19.94 usr +  0.00 sys = 19.94 CPU) @ 10031.10/s (n=200000)
      StrA:  6 wallclock secs ( 6.36 usr +  0.00 sys =  6.36 CPU) @ 31446.54/s (n=200000)
      StrB: 13 wallclock secs (12.67 usr +  0.00 sys = 12.67 CPU) @ 15782.83/s (n=200000)
      StrC: 19 wallclock secs (18.69 usr +  0.00 sys = 18.69 CPU) @ 10702.63/s (n=200000)