nada:   0.39 CPU @  2.56/s (n=1)
      trie:   3.73 CPU @  0.27/s (n=1)
        or:   6.04 CPU @  0.17/s (n=1)
    alt_re:   8.52 CPU @  0.12/s (n=1)
   alt_sub:   8.62 CPU @  0.12/s (n=1)
     index:   9.17 CPU @  0.11/s (n=1)
      list:  15.38 CPU @  0.07/s (n=1)