Thank you again. Now I already figure how this files works with OKBoard. Now I have another 2 questions:

- When I add corpora files, have I to copy all the sentences and words into one file and then compress it to bz2 or can I choose multiple files, compress them into one bz2 and then run db/build.sh?

- And another Q, which tools do you use to correct format that dumps of files? There is an easy way to do that? Normally I have to remove the first columns of the files, but another times I have to remove the last characters of those files... So I don't know how to make it properly...

- And regarding this, the correct dump files format for OKBoard sentences must to end with dots and between these sentences there must to be blank lines or these are unnecessary?

Thanks in advice folks!