Evolutionary History of Indo-European Languages (after Tandy Warnow)
| HI=Hittite
| LU=Luvian
| LY=Lycian
| VE=Vedic
| AV=Avestan
| PE=Old Persian
|
| GK=Ancient Greek
| LA=Latin
| OS=Oscan
| UM=Umbrian
| GO=Gothic
| NO=Old Norse
|
| OE=Old English
| OG=Old High German
| AR=Classical Armenian
| TA=Tocharian A
| Tocharian B
| OI=Old Irish
|
| WE=Welsh
| OC=Old Church Slavonic
| PR=Old Prussian
| LI=Lithuanian
| LT=Latvian
| AL=Albanian
|