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  1. or download this
    lanx@nc10-ubuntu:~/B/PL/PM/buk_trie$ perl buk_trie.pl chapter2.txt 
    481Finding 1027 words (of 5038) took 0.041860 seconds using a hash
    482Finding 923 words took 0.025128 seconds using a trie(via regex engi
    +ne)
    
  2. or download this
    lanx@nc10-ubuntu:~/B/PL/PM/buk_trie$ perl buk_trie.pl chapter2.txt 
    481Finding 1078 words (of 5038) took 0.040339 seconds using a hash
    482Finding 958 words took 10.042522 seconds using a trie(via regex eng
    +ine)
    
  3. or download this
    This is perl, v5.10.0 built for i486-linux-gnu-thread-multi