1. Osco-Umbrian
1.1. Oscan
1.2. Umbrian
1.3. Volscian
1.4. Picene
2. Italic
2.1. Latino-Faliscan
2.1.1. Faliscan
2.1.2. Latin
3. Celtic
3.1. Brythonic
3.1.1. Brittish
3.1.2. Cornish
3.1.3. Old Welsh
3.1.4. Breton
3.1.5. Welsh
3.2. Goidelic
3.2.1. Old Irish
3.2.2. Manx Gaelic
3.2.3. Irish Gaelic
3.2.4. Scottish Gaelic
3.3. Continental
3.3.1. Gaulish
3.3.2. Lepontic
3.3.3. Celtiberian
3.4. Brythonic
4. Germanic
4.1. Eastern
4.1.1. Gothic
4.1.1.1. Other East Germanic Dialects
4.2. Western
4.2.1. Old High German
4.2.2. Old Low German (Old Saxon)
4.2.3. Old English (Anglo-Saxon)
4.2.4. Low Saxon (Plattdeutsch, Low German)
4.2.5. German
4.2.6. Yiddish
4.2.7. Afrikaans
4.3. Northern
4.3.1. Old Scandinavian (Old Norse)
4.3.2. Danish
4.3.3. Faroese
4.3.4. Icelandic
4.3.5. Norwegian
4.3.6. Swedish
5. Armenian
6. Tocharian
6.1. Tocharian B
7. Anatolian
7.1. Hittite Cuneiform
7.2. Hittite (Luwian) Hieroglyphic
7.3. Luwian
7.4. Palaic
8. Indo-Iranian
8.1. Western
8.1.1. Parthian
8.1.2. Median
8.1.3. Old Persian
8.1.4. Middle Persian (Pahlavi)
8.1.5. Kurdish
8.1.6. Baluchi
8.1.7. Talysh
8.1.8. Gillani
8.1.9. Mazanderani
8.1.10. Ormuri
8.1.11. Persian (Farsi)
8.1.12. Dari
8.1.13. Tadjik
8.1.14. Luri and Bachtiari
8.1.15. Tati
8.1.16. Kumzari
8.2. Eastern
8.2.1. Scythian
8.2.2. Sacian
8.2.3. Bactrian
8.2.4. Sogdian
8.2.5. Khwaresmian
8.2.6. Pashto
8.2.7. Pamir languages
8.2.8. Ossetic
9. Greek
9.1. Greek
10. Balto-Slavic
10.1. Slavic
10.1.1. Polish
10.1.2. Czech