Programmatically clear Microsoft IME input history

Question

For Japanese Microsoft IME will store input history to recommend when the user starts typing in Japanese.

Like so:

I need to programmatically clear the history.　The user can clear the history manually from the IME properties here

How can I do it programmatically? Preferably with c# but a bat file or Registry edit would be fine too.

Answer 1

Ok so, a little under 1 year later I finally have figured out how to do it.

File.Delete(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "Microsoft", "InputMethod", "Shared", "JpnIHDS.dat")); }

The file will automatically recreate itself after being deleted but the users history will be gone.