These 4 letters are used in old Icelandic/old Norse so I decided to add them as minor characters. Update: added Ꝇ since it’s also used in old Icelandic.
Here is some proofs that these letters are used in old Icelandic: https://en.wikipedia.org/wiki/E_caudata https://en.wikipedia.org/wiki/Ll#Philippine_languages https://en.wikipedia.org/wiki/Ǫ https://en.wikipedia.org/wiki/Vend_(letter)
