...
You sound like you have some pretty bad luck. Unown occasionally drop the stone of the letter they represent, but after facing 23 and still not finding one... Keep trying is all I can say.
Uknown
uknown
in the ruins in solaceon town
go from violet city to the uknown caves. solve the sliding puzzle(a kabuto) you'll fall into the cave. the uknown should appear
it depends
Unfamiliar Strange Alien Uknown
a variable
Uknown?
(uknown)
47 + n
he did this because of reasons uknown
their current population status is uknown