Debian 13 (Trixie) to Debian 7 (Wheezy): the text shown here
Debian 6.0 (Squeeze)
Debian 5.0 (Lenny) to Debian 3.0 (Woody)
-- until Debian 6.0 (Squeeze);
-C until Debian 6.0 (Squeeze);
-N until Debian 6.0 (Squeeze);
-P until Debian 6.0 (Squeeze);
-S until Debian 6.0 (Squeeze);
-T until Debian 6.0 (Squeeze);
-a until Debian 6.0 (Squeeze);
-b until Debian 6.0 (Squeeze);
-c until Debian 6.0 (Squeeze);
-d until Debian 6.0 (Squeeze);
-e until Debian 6.0 (Squeeze);
-f until Debian 6.0 (Squeeze);
-h until Debian 6.0 (Squeeze);
-i until Debian 6.0 (Squeeze);
-k until Debian 6.0 (Squeeze);
-l until Debian 6.0 (Squeeze);
-m until Debian 6.0 (Squeeze);
-n until Debian 6.0 (Squeeze);
-o until Debian 6.0 (Squeeze);
-r until Debian 6.0 (Squeeze);
-s until Debian 6.0 (Squeeze);
-t until Debian 6.0 (Squeeze);
-u until Debian 6.0 (Squeeze);
-v until Debian 6.0 (Squeeze);
-x until Debian 6.0 (Squeeze).