Mmm... I definitely tested it before submitting and I actually went back to it right now and it is working in my environment. AND when I change index for 1, it doesn't work. I even opened a python interpreter earlier today and tested the for loop without index and with index and it wouldn't work with index. I can write up my testes again and show them to you. It's almost 3am right now (but 82ºF (28 ºC) - I am a Spaniard but heat... it kills me. I don´t know if I'll ever be able to handle it.) but I will try the data structure you proposed tomorrow and let you know how that goes. You're right that I'm not really doing anything with the question numbers. On Tue, Jun 26, 2012 at 11:58 PM, Robin J