|kanji||Kanji knowledge data.||24 bytes|
|lists||Folders, lists, custom words.||24 bytes|
|sets||Sets, groups.||20 bytes|
If any files are smaller than the minimum size, there has been an error backing them up. Files with the minimum size have no data present, and files larger than the minimum size contain data.
You might also want to copy these files somewhere else to make absolutely sure they won’t go anywhere.