deb http://ftp.us.debian.org/debian/ unstable main contrib non-free
#deb-src http://ftp.us.debian.org/debian/ unstable main contrib non-free

#deb http://ftp.us.debian.org/debian/ testing main contrib non-free
#deb-src http://ftp.us.debian.org/debian/ testing main contrib non-free

#deb http://ftp.us.debian.org/debian/ experimental main contrib non-free
#deb-src http://ftp.us.debian.org/debian/ experimental main contrib non-free