Looking on the internet deeply has found these results:

I can be wrong is the most popular phrase on the web.

I could be wrong 122,700,000 results on the web	I can be wrong 126,500,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
For those who have met Tommy, I bet they prefer girls. I could be wrong there. Harry, I could be wrong, but I think they expect you to say something here. Course, I could be wrong, but I don't think so. Or I could be wrong, and two months of engineering Just went down the drain. I could be wrong about all that other stuff. I could be wrong, but I sense that David's finally looking to settle down. I could be wrong, but it looks like two girls. I could be wrong, but it's happened at least once.	I did, but for once, I can say I'm thrilled to be wrong. He said: "Well, I'm working to be Meteorologist." "That's the only job that I can be wrong every day and not get fired." Well, I guess you can be wrong, can't you, sir? How can I be right and wrong? I accept the criticisms, I can even admit that I can be wrong. How can I be the wrong Alice when this is my dream? "That's the only job that I can be wrong every day and not get fired". How can I be wrong about the thyroid but right about the accident?

I could be wrong

122,700,000 results on the web

I can be wrong

126,500,000 results on the web

More popular!

For those who have met Tommy, I bet they prefer girls. I could be wrong there.
Harry, I could be wrong, but I think they expect you to say something here.
Course, I could be wrong, but I don't think so.
Or I could be wrong, and two months of engineering Just went down the drain.
I could be wrong about all that other stuff.
I could be wrong, but I sense that David's finally looking to settle down.
I could be wrong, but it looks like two girls.
I could be wrong, but it's happened at least once.

I did, but for once, I can say I'm thrilled to be wrong.
He said: "Well, I'm working to be Meteorologist." "That's the only job that I can be wrong every day and not get fired."
Well, I guess you can be wrong, can't you, sir?
How can I be right and wrong?
I accept the criticisms, I can even admit that I can be wrong.
How can I be the wrong Alice when this is my dream?
"That's the only job that I can be wrong every day and not get fired".
How can I be wrong about the thyroid but right about the accident?