The script makes 175760 permutations. For me the script takes around around 1.5 seconds to query the page each time. 175760 * 1.5 / 60 = 4394 minutes / 60 = 73.23 hours of constantly hitting the site. I'm not sure how the parallel connections it uses will impact the speed, but 3 days seems feasible. Not to say that this should ever be tried.