deb http://deb.debian.org/debian bullseye main contrib non-free
deb http://security.debian.org/debian-security bullseye-security main contrib non-free
deb http://deb.debian.org/debian bullseye-updates main contrib non-free
# Uncomment deb-src lines below then 'apt-get update' to enable 'apt-get source' or not
#deb-src http://deb.debian.org/debian bullseye main contrib non-free
#deb-src http://security.debian.org/debian-security bullseye-security main contrib non-free
#deb-src http://deb.debian.org/debian bullseye-updates main contrib non-free