Germanic | English, German, Dutch, Swedish, Norwegian, Danish, Icelandic |
Italic (Romance) | Italian, Spanish, French, Portuguese, Romanian |
Celtic | Irish, Scottish Gaelic, Welsh, Breton |
Hellenic | Greek |
Anatolian | Hittite (extinct) |
Tocharian | Tocharian A and Tocharian B (both extinct) |
Indo-Iranian | Hindi, Urdu, Persian, Bengali, Punjabi, Marathi, Gujarati, Pashto, Kurdish |
Balto-Slavic | Russian, Polish, Czech, Slovak, Bulgarian, Serbian, Croatian, Lithuanian, Latvian |
Celtic | Irish, Welsh, Scottish Gaelic, Manx, Cornish, Breton |
Armenian | Armenian |
Hellenic | Greek |
Albanian | Albanian |