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caused grave concern is the most popular phrase on the web.

have cause grave concern 10 results on the web	caused grave concern 1761 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.	The implications of the agreement concerning Vietnam have caused grave concern regarding the future of the country temporarily divided by an artificial military�... The Arthur's commander, acting lieutenant John W. Kittredge, was bold and aggressive, and his activities over a period of seven months caused grave concern�... The overthrow of the shah of Iran in February 1979 and the emergence of Ayatollah Sayyid Ruhollah Musavi Khomeini caused grave concern in Amman. ... Spain's northernmost province that caused grave concern among ruling authorities regarding the state of military preparedness along the northern frontier .

have cause grave concern

10 results on the web

caused grave concern

1761 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.

The implications of the agreement concerning Vietnam have caused grave concern regarding the future of the country temporarily divided by an artificial military�...
The Arthur's commander, acting lieutenant John W. Kittredge, was bold and aggressive, and his activities over a period of seven months caused grave concern�...
The overthrow of the shah of Iran in February 1979 and the emergence of Ayatollah Sayyid Ruhollah Musavi Khomeini caused grave concern in Amman.
... Spain's northernmost province that caused grave concern among ruling authorities regarding the state of military preparedness along the northern frontier .