Hint: use the hex option with a length of 10 to generate random 40-bit WEP keys, or a length of 26 for 128-bit WEP keys.
Which character sets should be used (note that angle brackets are omitted due to issues with the resulting HTML code)?
%!@$^&*~#+=%!@$^&*~#+=()_`-[]{}\|;":',./?01234567890123456789abcdefABCDEFABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz