Try user's name, initials, account name, other relevant personal info: 130 permutations per user
Try words from dictionaries:60,000 words compiled
Try various permutations on words from last step
e.g. make the first letter upper case, make the entire word uppercase, reverse the word, etc.: 1 million words 2 list
Try various capitalization permutation on words from step 2 not considered in step 3: 2 million words to list
3 million total: Thinkinkimg Machines crack under 1 hour, 25% success rate!