Looking on the internet deeply has found these results:

I know any of them is the most popular phrase on the web.

I don't know some of them. 13,520 results on the web	I know any of them 1338,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Feb 8, 2015 ... Some of them I don't know. Some of them I do know. They just started picking anybody out of the neighborhood. They got me locked up with ... “Well, I don't know. Some of them gets on the police, and some of them learns people how to talk French.” “Well, I don't know. Some of them become policemen ... "Well, I don't know. Some of them gets on the police, and some of them learns people how to talk French." "Why, Huck, doan' de French people talk de same way ... "Well, I don't know. Some of them gets on the police, and some of them learns people how to talk French." "Why, Huck, doan' de French people talk de same way ...	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

I don't know some of them.

13,520 results on the web

I know any of them

1338,000 results on the web

More popular!

Feb 8, 2015 ... Some of them I don't know. Some of them I do know. They just started picking anybody out of the neighborhood. They got me locked up with ...
“Well, I don't know. Some of them gets on the police, and some of them learns people how to talk French.” “Well, I don't know. Some of them become policemen ...
"Well, I don't know. Some of them gets on the police, and some of them learns people how to talk French." "Why, Huck, doan' de French people talk de same way ...
"Well, I don't know. Some of them gets on the police, and some of them learns people how to talk French." "Why, Huck, doan' de French people talk de same way ...

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