Jmeter different loop count for every user

I want to extract some IDs using Regular Expression Extractor after a GET request, but every new user have different number of IDs after his GET request e.g. a single thread(user) has 10 teacher IDs so I can get Ids by putting a regular expression extractor in a loop with 10 iterations but when there are 100 users and every user has different count of IDs then how can I use my loop here?