Articles in various languages

I need your advice again. In an effort to further reduce the database and provide more accurate results I am trying to exclude various types of "words" (lexemes or tokens to be precise). First, I removed all format specifiers, like %s. Next, I decided to reduce the number of words that don't carry any meaning. An obvious example from English language is the article "the". Looking up "the" in open-tran won't display any results, because the engine considers this phrase empty (no words). However, I speak only English and German. Together with my girlfriend and Wikipedia we prepared the following list of articles in several European languages:

Code	Language	List of ignored lexemes
de	German	das, dem, den, der, deren, des, dessen, die, ein, eine, einem, einen
en	English	a, an, the
es	Spanish	el, la, las, los, una, uno, unas, unos
fr	French	la, le, les, un, une
it	Italian	i, il, lo, gli, la, le, un, uno, una
pl	Polish	by
pt	Portuguese	o, os, a, as, um, uns, uma, umas

I am planning to add Dutch articles (de, een, het) in the future, too. As you can see, my table covers only 7 languages and open-tran supports more than 90. So I hope that maybe you could help me assembling similar lists for the remaining languages.

I am aware that suffixes may be used as articles in some languages (e.g. Romanian) and if you have any idea on how to tackle this issue without integration of expensive, language-specific dictionaries, then let me know.

If you have other ideas on how to improve the accuracy and/or limit the number of records stored in the database - I will appreciate your feedback. Leave a comment here, or send an e-mail to open-tran@groups.google.com. Thanks!