Multisite with subdomain and subdirectory addresses

Hello.

I have a wordpress multisite that uses subdomain addresses. I would like to have some of those subsites to use subdirectories instead. Is it possible?

Example:

site1.example.com
site2.example.com -> I’d like this to be example.com/site2
site3.example.com -> I’d like this to be example.com/site3
site4.example.com