1 deb http://http.us.debian.org/debian buster main
2 deb-src http://http.us.debian.org/debian buster main
4 deb http://security.debian.org/ buster/updates main
5 deb-src http://security.debian.org/ buster/updates main
7 deb http://http.us.debian.org/debian buster-updates main
8 deb-src http://http.us.debian.org/debian buster-updates main
10 deb http://http.debian.net/debian buster-backports main
11 deb-src http://http.debian.net/debian buster-backports main