Building a language identifier part 2

Part 1 used the frequency distribution of characters to identify languages. This time I'm using key words for the three target languages. The code is available in my code blog.

test reults

for 20 word inputs
test    dutch_score    english_score    basque_score
Basque       0                       0                         3
English        0                      5                          0
Dutch          6                      0                          0

for 9 words
Basque       0                       0                         1
English        0                       1                         0
Dutch          2                       0                         0

for 2 words
Basque       0                       0                          0
English        0                       0                         0
Dutch          0                       0                         0

Summary:

Version 2 scored 100% for both 20 and 9 word inputs but failed miserably for the 2 word inputs scoring 0% for each of the three languages. I think a combination of both approaches would produce the most accurate results but it will always be difficult for very short inputs.