Here is a link to one she uses for large groups:
https://www.contributor-covenant.org/version/1/4/code-of-con...
If you look at the list of unacceptable behaviors, each one of those is pretty much guaranteed to happen given a sufficiently large group and enough time. The amount of time it takes for the code to be clearly violated is typically far less that you expect or want it to be.
The interesting thing is that many/most offenders don’t think they are breaking the code even if they had read it. That’s why the wording is important — it helps during the intervention stage.