"We cannot say that word?"
Translation:To slovo říkat nesmíme?
Why is this question asked not by the rules of English grammar? Cannot we say that word? - that's right.
Interesting observation. As a native (US) English speaker, I wouldn't expect to hear anyone say, "Cannot we say that word?" US speakers would almost certainly use, "Can't we say that word? or "We can't say that word?" Maybe your version would be more common among "British English" speakers?