voc.txt was generated from a dump of the Lithuanian wikipedia by the script
wikipedia-most-common-words like so:

WikiExtractor.py ltwiki-latest-pages-articles.xml.bz2
cat text/*/*|./wikipedia-most-common-words 10 latin > voc.txt

The dump used was dated May 3rd 2018.

output.txt was generated from voc.txt by running it through the stemmer:

stemwords -l lithuanian -c UTF_8 -i lithuanian/voc.txt -o lithuanian/output.txt

Wikipedia is licensed as: https://creativecommons.org/licenses/by-sa/3.0/
