deb http://deb.debian.org/debian/ testing main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian/ testing main contrib non-free non-free-firmware

deb http://security.debian.org/debian-security testing-security main contrib non-free non-free-firmware
deb-src http://security.debian.org/debian-security testing-security main contrib non-free non-free-firmware

deb http://deb.debian.org/debian/ unstable main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian/ unstable main contrib non-free non-free-firmware

deb http://deb.debian.org/debian/ experimental main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian/ experimental main contrib non-free non-free-firmware