I do not know for sure if this will work, but I'll try anyway... Here
is the annoying "o-tail" in both capital and as a smaller font; Ǫ ǫ. I
hope that all one need to do is to copy-paste this into the text
you're typing, though I do not have any knowledge about technical
difficulties regarding this. Anyway, I suggest that you copy-paste
these "unavailable" letters into a text document for later use.