Looking on the internet deeply has found these results:

have been had a significant is the most popular phrase on the web.

have been had a significant development 10 results on the web	have been had a significant 1134 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.	But regardless of whether Jermyn actually was the King's father, the fact that he could have been had a significant effect on the way Charles II and the rest of the �... had a significant positive effect. I think it's good on the other hand because we are going to see the�... Jul 30, 2015 ... It's bad because that law would have been The painting would have been had a significant rhetorical force in the context of the Frieze because of its physical separateness and its placement opposite to�... and bring a person's distress beyond what it would have been, had a significant other simply avoided them or failed to show them a caring interest after the loss.

have been had a significant development

10 results on the web

have been had a significant

1134 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.

But regardless of whether Jermyn actually was the King's father, the fact that he could have been had a significant effect on the way Charles II and the rest of the �...
had a significant positive effect. I think it's good on the other hand because we are going to see the�...
Jul 30, 2015 ... It's bad because that law would have been
The painting would have been had a significant rhetorical force in the context of the Frieze because of its physical separateness and its placement opposite to�...
and bring a person's distress beyond what it would have been, had a significant other simply avoided them or failed to show them a caring interest after the loss.