Single post in A guide on breeding Unown's

Hey there! I have a question and I apologise if you’ve already explained but there’s so many posts on this forum and I don’t have the time to sift through 😅 Buuuut.. I have an ‘A’ pair unowns and it says they may breed something unexpected.. last time I saw this was with variants so I was wondering, what is the unexpected thing they may breed? Thanks in advance! :)