I consider, that you are mistaken.

I apologise, but this variant does not approach me.

Bad taste what that

Should you tell you have deceived.

On your place I would try to solve this problem itself.

As it is impossible by the way.

I consider, that you are mistaken. I suggest it to discuss.

I think, that you are mistaken. Let's discuss it.

Today I read on this theme much.

You commit an error. Write to me in PM, we will discuss.

What words... super, a remarkable idea

It is difficult to tell.

Look at me!

Remember it once and for all!

.. Seldom.. It is possible to tell, this exception :)