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has been known as is the most popular phrase on the web.

has known as 1544,000 results on the web	has been known as 126,300,000 results on the web More popular!
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It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Yes, it has been known as irresistible impulse. In 1950 it was named Osuusteurastamo Karjaportti; from 31 December 2002 it was known as Järvi 50, which has been known as "The Loneliest Road in America" since 1986. We would be using the l Suomen Portti Osuuskunta and since 14 December 2010, it has been known as Karjaportti. Now if you'll excuse me, there's a gentleman waiting for me in my apartment which for the last eight months, has been known as the dead zone. As an Irish Member, I believe we have benefited from what has been known as 'the Irish amendment'.

has known as

1544,000 results on the web

has been known as

126,300,000 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.

Yes, it has been known as irresistible impulse.
In 1950 it was named Osuusteurastamo Karjaportti; from 31 December 2002 it was known as Järvi
50, which has been known as "The Loneliest Road in America" since 1986.
We would be using the l
Suomen Portti Osuuskunta and since 14 December 2010, it has been known as Karjaportti.
Now if you'll excuse me, there's a gentleman waiting for me in my apartment which for the last eight months, has been known as the dead zone.
As an Irish Member, I believe we have benefited from what has been known as 'the Irish amendment'.