Hi I am quite new to password generation so forgive me if this is a stupid question:) I am trying to generate all possible combinations of WPA keys for BigPond modems in Australia. i have identified the layout of every single key that they generate. they look like this 1234E5678D: and its always the same layout " the first 4 characters are numbers, then the 5th character is a capital letter. then the next 4 are numbers again and the last is a letter" but for the life of me i cannot seem to work out how to generate keys with such specific parameters? any ideas how i would accomplish this? any help would be much appreciated.