A is taken…
- …necessary for B
- …as necessary for B
- …to be necessary for B
The most and least popular ones on the web are respectively 2 and 3. On Google Ngram, 1 is the most popular, even though it has recently lost its place to 2, and 3 is again the least popular.
Which one is the best? Why? Or does it really matter?
An example for #1:
an arrangement has been made with a third party where the third party has confirmed that the share has been located and measures have been taken necessary for a reasonable expectation that settlement can be effected when due. Source