What if he had a program that quickly guess thousands of different combinations till it got one?
Well Blockland keys can only be accessed from your area code, and if you don't have one bought for your area code, then you can't get a program to guess a key that doesn't exist.
Plus, a 12-digit key with all 26 letters and 10 digits of numbers...that would give you...
Daw, I don't have honors geometry 'till next semester, I forget how to do this type of problem. >.<