This tool is designed to accept a list of CRLF delimited words which may contain multiple exact duplicates.
uwl Inputfile Outputfile Slotcount
EXAMPLE
uwl source.txt dest.txt 5000
If you know how many words in the list, use that number or bigger, if you don't know the count, you can use very big numbers but this may slow down the hash table creation.
With the files in the zip, try this command line.
uwl 10000.txt result.txt 10000