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 << nextState -> first << "-" << curState -> first << "->" << curState -> second;
               }