Looking on the internet deeply has found these results:

have already taken is the most popular phrase on the web.

Have already been taken 12,980,000 results on the web	have already taken 112,800,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Measures have already been taken to restrict water use. Some decisions have already been taken. At EU level, several measures have already been taken. The basic decisions for establishing the House have already been taken. Some steps have already been taken to remove some of the barriers faced by entrepreneurs. As you know, many initiatives have already been taken at the instigation of the European Council. Various initiatives have already been taken at European level. Commissioner Reding has not mentioned that two of these steps have already been taken.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Have already been taken

12,980,000 results on the web

have already taken

112,800,000 results on the web

More popular!

Measures have already been taken to restrict water use.
Some decisions have already been taken.
At EU level, several measures have already been taken.
The basic decisions for establishing the House have already been taken.
Some steps have already been taken to remove some of the barriers faced by entrepreneurs.
As you know, many initiatives have already been taken at the instigation of the European Council.
Various initiatives have already been taken at European level.
Commissioner Reding has not mentioned that two of these steps have already been taken.

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