Find Users who are in two or more groups

Hey Guys, is it possible to scrape/find users who are in 2 groups, for example

Peter is in Group "Baseball Friends"
Peter is in Griup "Football Friends"

If i dont know Peter before, how can i search for users who are in the Group
"Football Friends" and "Baseball Friends" ?

Im also in these two groups, how can i find users who are in 2 groups of my choice?

Help needed!

@GermanBeast Grid Search Intersect

Example: https://facebook.com/search/1485357135082049/members/1471408909812886/members/intersect/ (FB security logic errors and you don't even need to be in a closed group to intersect scrape common users, many other fuckups despite privacy settings with grid scraping)

How to find a numeric group ID - look at page src, ctrl + f - "fb://group/" (or findmyfbid.com) then pull the numeric ID - others which don't have set page names will have it directly in the URL.

You can get stupid Inception level deep with these scrapes to extract raw gold if you are creative enough to come up with the queries.
Another Basic Example:
https://www.facebook.com/search/148...9/likers/112463092102121/residents/intersect/ (users who live in USA, like BHW page, and are a member of that closed marketing group despite your acct not being a member of)