I use a password generator "http://passhash.connorhd.co.uk/" http://passhash.connorhd.co.uk/" that generates random 12 character passwords with uppercase, lower

I use a password generator "http://passhash.connorhd.co.uk/" http://passhash.connorhd.co.uk/" that generates random 12 character passwords with uppercase, lowercase and digits. If you can design software that can guess those passwords, you should work on something more challenging, like predicting the stock market or creating a friendly AI.