Looking on the internet deeply has found these results:

We have eaten is the most popular phrase on the web.

We had eaten 1387,000 results on the web	We have eaten 11,190,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
We had eaten dinner and gone dancing before the trip. made animal feed! Mr President, in politics, we have to learn to wait... for years, we have been asking here for a zero rate and everybody thought we had eaten too much British We had eaten everything we possibly could, and were one step away from starvation Our lips swollen from the quantity of mandarins we had eaten.	Now that we have eaten up, let's go. I want to empty my stomach of all this junk we have eaten. We have eaten and drunk the same things since we got to Grimpen, apart from one thing. We have eaten no meat for several days. We have eaten horse before, Captain Baillie, when we were desperate sailors at war and in need of provision. We have eaten them all, thee and me. Because of the famine, we have eaten everything: horses, dogs, cats. I know it's rude to say something before we have eaten, so I will keep it short.

We had eaten

1387,000 results on the web

We have eaten

11,190,000 results on the web

More popular!

We had eaten dinner and gone dancing before the trip.
made animal feed!
Mr President, in politics, we have to learn to wait... for years, we have been asking here for a zero rate and everybody thought we had eaten too much British
We had eaten everything we possibly could, and were one step away from starvation
Our lips swollen from the quantity of mandarins we had eaten.

Now that we have eaten up, let's go.
I want to empty my stomach of all this junk we have eaten.
We have eaten and drunk the same things since we got to Grimpen, apart from one thing.
We have eaten no meat for several days.
We have eaten horse before, Captain Baillie, when we were desperate sailors at war and in need of provision.
We have eaten them all, thee and me.
Because of the famine, we have eaten everything: horses, dogs, cats.
I know it's rude to say something before we have eaten, so I will keep it short.