#include <iostream>
#include <string>
#include <vector>

using namespace std;

vector<string> dict;
string tiles;

int main (){
  int n;
  while (cin >> n){
    if (n == 0) break;
    dict.clear();
    dict.resize(n);
    for (int i = 0; i < n; i++)
      cin >> dict[i];
    cin >> tiles;

    int ct = 0;
    for (int i = 0; i < n; i++){
      vector<int> used (tiles.size(), 0);
      bool bad = false;
      for (int j = 0; !bad && j < dict[i].length(); j++){
	bool found = false;
	for (int k = 0; !found && k < tiles.size(); k++) if (!used[k]){
	  if (tiles[k] == dict[i][j]){
	    used[k] = true;
	    found = true;
	  }	    
	}
	for (int k = 0; !found && k < tiles.size(); k++) if (!used[k]){
	  if (tiles[k] == '_'){
	    used[k] = true;
	    found = true;
	  }	    
	}
	if (!found) bad = true;
      }      
      if (!bad) ct++;
    }
    cout << ct << endl;
  }
}