NSDictionary iteration

hi i have a doubt i have a plist in that dictionaries are defined and i want to iterate throughit and i am using for each loop but it is not working in my code but same code is working in periodic elements code from apple plist format is
gang dictionary
a 1
b 2
c 3
bang dictionary
a 4
b 5
c7
like that i have ten dictionaries how can i iterate through it and i want to extract each dictionary.
even i have used NSEnumerator it is not working

Post your code. That way people can see what you are trying to do.