A small Python URL bruteforce

Hello /prog/, I need help with, well, programming.

I want to bruteforce URLs of the form sys.AAA.org/XXXX/BBB in python and sort the results by success or failure (determined by the returned text). AAA is a given website and BBB a given address.

XXXX is a 1 to 4 characters word using lowercase letters and numbers that I need to bruteforce.

Any tips or example on how to make a very simple bruteforce code in Python, I'm very new to this ?

1 - Generate the URLs. Assuming they are in the 7-bit ASCII range (all the important ones), there are only 270,549,120 different possibilities.
2 - Connect to each one, note the status code each time.
3 - Get banned every few minutes because you look like a DDoS attack to the IPS and firewall.
4 - Go ask /g/ to just h4xXx0r the site for you instead.