Unfortunately we know less about them than we should like since they are kept mainly in charters, runic books, a few poems, and some interlinear translations of the Bible.

不幸的是，它的了解不如想要的多，因为它主要只是存在于契约/宪章/公、古北欧、几首诗和一些圣经的隔行穿插译本中。