Why do some bech32 bitcoin addresses have structures that contain a lot of “q”?

I found a bech32 bitcoin address that has a specific structure with a lot of “q”s. Here are some examples: bc1qmdtv5qqqqqqp4qnz5ghlejq9evyuxgqqqqq9yj3zp2sydwcmqqqqq2j6wen bc1qqyqzr7gyq5qqqqsq9smqqqqqqyyqq6qqqqg6ffrepsrrvmgjspk7srnq0kp bc1qd4sn6vpwxs6ngdf4qqsljpq9q5qqvqpvqyqqzqqcqqwqqqqrmy5q505e7m

Other bech32 addresses with different structures (and thus likely different usage) are: bc1q9scnqtpn9sejcdza05qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq5wx2ys bc1q9scjcvpvxykrqtpn9s6jcvf39sc46lgqqqqqqqqqqqqqqqqqqqqqqqqqlcyp97

It looks like a specific (or several) protocols on top of Bitcoin use this address. Do you know which protocols use this address? It would be nice to have a link to a document about the address structure.

thank you.