I think I mentioned it in another thread, but for .se, mainly Swedish keyword sell at decent or high prices. Even a super popular keyword such as ”phone” (phone.se) only sold for a $xxx in a recent auction at:
www.tradera.se.
At the same website, the domain Jul.se (meaning ”christmas in Swedish”) sold for almost $5000 recently.
So the conclusion is that mostly Swedish words are attractive with this extension. But rememer that some English words are the same in Swedish.