#include <iostream>
#include <fstream>
#include <map>

const int NMAX = 100005;

using namespace std;

ifstream f("test.in");

map <char, string> morse;
map <string, int> reversed;
int N, answer;
string words[NMAX];

int main()
{
    for (char c = 'a'; c <= 'z'; ++c)
    {
        char ch;
        string cod;
        cin >> ch >> cod;
        morse[ch] = cod;
    }

    cin >> N;

    for (int i = 1; i <= N; ++i)
    {
        cin >> words[i];
    }

    for (int i = 1; i <= N; ++i)
    {
        string coded_word = "";
        for (int j = 0; j < words[i].size(); ++j)
        {
            coded_word += morse[words[i][j]];
        }
        if (reversed.find(coded_word) == reversed.end())
        {
            reversed[coded_word] = 1;
        }
        else
        {
            reversed[coded_word] += 1;
        }
        if (reversed[coded_word] > answer)
        {
            answer = reversed[coded_word];
        }
    }

    if (answer <= 1)
    {
        cout << "-1";
    }
    else
    {
        cout << answer << '\n';
    }

    return 0;
}