#include <stdio.h>
#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define ld long double
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pdd pair<ld, ld>
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second

string code[30];
map<string, int> mlc;

int main() {
  cin.sync_with_stdio(false);

  for (int i = 0; i < 26; i++) {
    string letter, c;
    cin >> letter >> c;
    code[letter[0] - 'a'] = c;
  }

  int n;
  cin >> n;
  for (int i = 1; i <= n; i++) {
    string s;
    cin >> s;
    string mors;
    for (auto it : s) {
      mors += code[it - 'a'];
    }
    mlc[mors]++;
  }

  int ans = 1;
  for (auto it : mlc) {
    ans = max(ans, it.se);
  }
  if (ans == 1) {
    ans = -1;
  }
  cout << ans << '\n';

  return 0;
}