[Aardwolf]

Do you know one where it's easy to type? There are many international keyboards but I don't think any has that many dashes. Compose key is the best I think.

[teddyh]

Reportedly, a “German standard keyboard according to DIN 2137-1:2012-06” has them: https://unicode.org/wg2/docs/n4984-Unicode-Proposal-9995-V7....