for (map <int, map<char, int> >::iterator it = nextState.begin(), end = nextState.end(); it != end; it++) {
               map <char, int> curState;
               for (map <char, int>::iterator it1 = curState.begin(), end1 = curState.end(); it1 != end1; it1++)
               cout << it -> first << "-" << it1 -> first << "->" << it1 -> second;
               }