Crossfire etiquette

So I've been wondering for a while. What is allowed and what isn't regarding chat.
My thought on this is maybe right, maybe wrong.
The game has a chat filter. It blocks various swearwords like -removed-. And even works for different languages. It blocks Arabic stuff and German stuff as far as I know.
I know that bypassing this can lead to bans, if I type -removed- or various alterations.
Now does this chat filter mean that anything that is not filtered is allowed to type out? Stuff can be seen as rude or slang viewed differently, so how to be on the safe side?
Is there a list of anything that can lead to a ban via me typing it?