Hi Arthur, Thank you for help!
I've created a script to generate patterns and here is the result: script: https://github.com/msalau/hyph-be/blob/master/hyph-be.py patterns: https://github.com/msalau/hyph-be/blob/master/hyph-be.tex XeTeX is happy with these patterns, and now is the time to verify them :) Is there any simple way to feed a bunch of words to *TeX and get hyphenated words back? Also, is there any easy way to prohibit hyphenation of consonant-only endings/beginnings of a word? I can remember a word with 3 consonants at the end. Is generation of .ccc8 8ccc. patterns the only way to go? (patterns for 2 consonants are already in place) Licensing question is still open. I failed to contact Sviatlana and Alex answered nothing about switching to the MIT license. Best regards, Maksim.
