Sorry, this should fix the issue - http://privatepaste.com/42e170b0cb

Please note when I recoded it I made sure to make sure it performs fast. As you'll notice with large combinations (like 10,000,000 mine will perform around 5 times faster than moderate's solution on chrome on my computer).

I tested it and it should take 41.67 hours to solve 8,000,000 combinations (on my computer).