Thank you for the information Jack. I'll add my not-so-current CHIP LLL list here also. Those that are on the list were available an hour ago.
If you're thinking of registering any of these do take it consideration that they are effectively worthless at the moment. And may well remain so. I don't want anyone burning their rent money because I made a list. Nor does Jack I suspect.
https://www.namepros.com/posts/5211536/Where are they selling their .ch domains?
Tough call. I like as short as possible so I would say LLL. Personal preference.