Bob works at a high security institution.
One day Bob tried to log into his computer and his password was denied. Then remembered that, for security reasons, the passwords were reset every month. So he called his boss for his new password.
Boss, my old password is out of date.
The boss replied,
Yes, it is. The new password is different, but if you pay attention you will be able to figure out the new one. Your new password has the same amount of letters as the old one, and four of the letters are the same.
Bob was then able to log into his computer without any problem.
What was Bob's new password? What was Bob's old password?