These language models are for extinct languages, seriously endangered
languages, and languages/codesets almost never used in electronic mail.

The overhead of each additional language is minimal, so place language
models into this directory sparingly.

Breton          br.lm
Hawaiian        haw.lm
Manx Gaelic     gv.lm
Middle Frisian  middle-frisian.lm
Mingo           mingo.lm