Looking on the internet deeply has found these results:

We are sorry to hear is the most popular phrase on the web.

We are sorry to hearing 17 results on the web	We are sorry to hear 11,280,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
She's having a hard time hearing how sorry I am. I'm sorry, my hearing's failing. I'm tired of hearing sorry. Sorry, my hearing aid's on the fritz. I'm sorry I'm hearing the Bond music again now. Sorry, my hearing isn't what it used to be either. She's having a hard time hearing how sorry I am.	We are so sorry to hear that, Katherine. Of master Piell's loss, we are sorry to hear. We both are so sorry to hear that. We are very sorry to hear you say this. We are sorry to hear from Mrs Gradin that Mr Flynn cannot be here, but she has explained that he intended to propose withdrawing the proposal to amend the 1976 directive. Please applaud them, especially as we are particularly sorry to hear the news of another serious earthquake in the north west of Turkey on Monday, only a few weeks after the tragic events which have struck this same region. We are so sorry to hear about your nephew.

We are sorry to hearing

17 results on the web

We are sorry to hear

11,280,000 results on the web

More popular!

We are so sorry to hear that, Katherine.
Of master Piell's loss, we are sorry to hear.
We both are so sorry to hear that.
We are very sorry to hear you say this.
We are sorry to hear from Mrs Gradin that Mr Flynn cannot be here, but she has explained that he intended to propose withdrawing the proposal to amend the 1976 directive.
Please applaud them, especially as we are particularly sorry to hear the news of another serious earthquake in the north
west of Turkey on Monday, only a few weeks after the tragic events which have struck this same region.
We are so sorry to hear about your nephew.