what kind of comments/arguing from a coach constitute a technical foul?

[thereluctantref]

I know that this is probably very subjective but what kind of comments are acceptable and unacceptable from a coach? I know that some coaches like to "work" the referees but I was wondering when their comments overstep the boundary. I have some examples below and could you tell me which are acceptable and not?

1. "What kind of call was that?"
2. "You've got to be kidding me!"
3. "C'mon ref, you have to call it both ways!"
4. "1, 2, 3" (counting 3 seconds for you)
5. "Oh! That wasn't a foul!"

I know that some comments are more neutral, like when coaches point out violations, like calling out traveling or double dribbles, but I was wondering about if these are ever acceptable.