- ICU
http://userguide.icu-project.org/boundaryanalysis
- ICU_RSV
http://userguide.icu-project.org/boundaryanalysis#TOC-Rule-Status-Values
- UAX29
https://www.unicode.org/reports/tr29/tr29-33.html#Word_Boundaries
- UNIDECODE
https://pypi.org/project/Unidecode/