src/third_party/icu/source/data/coll/bg.txt

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
// Generated using tools/cldr/cldr-to-icu/build-icu-data.xml
bg{
    collations{
        standard{
            Sequence{"[reorder Cyrl]"}
            Version{"38"}
        }
    }
}