Looking on the internet deeply has found these results:

required to do is the most popular phrase on the web.

required doing 140,000 results on the web	required to do 1522,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	This really falls short of what we are required to do under international law. They're required to do a walk around. You will also be required to do a few personal things for me... Judge Forer did what she was required to do, and then she quit the bench. They are what we are required to do. And I'm required to do what my mother always taught me. The controls have proved to be a bit 'too confusing, and it is not always clear what we are required to do within layers, forcing you to proceed by trial and error.

required doing

140,000 results on the web

required to do

1522,000,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

This really falls short of what we are required to do under international law.
They're required to do a walk
around.
You will also be required to do a few personal things for me...
Judge Forer did what she was required to do, and then she quit the bench.
They are what we are required to do.
And I'm required to do what my mother always taught me.
The controls have proved to be a bit 'too confusing, and it is not always clear what we are required to do within layers, forcing you to proceed by trial and error.