[predictand]

Thanks for the correction! That's good to know. I also noticed it isn't dreizig but dreissig, whereas it is vierzig (and not vierssig). I have to double-check whether it is my source that's wrong or just another exception to memorize.

[1718627440]

> dreizig but dreissig

Actually it's 'dreißig'. It can't be 'dreissig', since a double consonant like 'ss' indicates a short vowel, which a diphthong like 'ei' can never be.

[chmod775]

A hundred years ago you might've still commonly seen it spelled "dreiszig".