Looking on the internet deeply has found these results:

we've been a part is the most popular phrase on the web.

we've been part 1346,000 results on the web	we've been a part 11,940,000 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.	approved, that part need not be described if reference is made to such approval. It was really about the most man thing I think we've ever been a part of. Swearing is a part of English and it's a huge part of social interaction. ) If a part has been type A part of this flight (namely the part between Schiphol Airport and Brussels) was operated by a railway company. These people attach a part of themselves To their collection. Companies manufacturing urea form a part of larger groups. Projects we've done. Projects we've been a part of, support.

we've been part

1346,000 results on the web

we've been a part

11,940,000 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.

approved, that part need not be described if reference is made to such approval.
It was really about the most man thing I think we've ever been a part of.
Swearing is a part of English and it's a huge part of social interaction.
) If a part has been type
A part of this flight (namely the part between Schiphol Airport and Brussels) was operated by a railway company.
These people attach a part of themselves To their collection.
Companies manufacturing urea form a part of larger groups.
Projects we've done. Projects we've been a part of, support.