The green forms, from Uralic languages, have also been suggested to have been borrowed from the *leg-branch of PIE, but this is apparently uncertain.

One very interesting thing is that Old Norse, which for a few centuries had two parallell writing systems, Latin letters and Runes, seems to have used different words for reading the two. "Lesa" for letters, and "ráða" for Runes. "Ráða" is related to English "read".