#include <bits/stdc++.h>
using namespace std;

string m[26];
map<string,int> H;

string toMorse(string word)
{
    string ret = "";
    for (int i = 0; i < (int)word.size(); i++)
        ret = ret + m[word[i]-'a'];
    return ret;
}

int main()
{
    //freopen("input","r",stdin);
    for (int i = 0; i < 26; i++)
    {
        string s1,s2; cin >> s1 >> s2;
        m[s1[0]-'a'] = s2;
    }

    int n;
    cin >> n;
    int Sol = 0;
    for (int i = 1; i <= n; i++)
    {
        string s;
        cin >> s;
        string tm = toMorse(s);
        H[tm]++;
        Sol = max(Sol,H[tm]);
    }
    if (Sol > 1)
        cout << Sol;
    else cout << -1;
}