#include <bits/stdc++.h>

using namespace std;

map <char, string> harta;
map <string, int> frecventa;

int main()
{
    for(int i = 1 ; i <= 26 ; ++i){
        char x;
        string qwe;
        cin>>x>>qwe;
        harta[x] = qwe;
    }
    int n;
    cin>>n;
    int subsirMaxim = 1;
    for(int i = 1 ; i <= n ; ++i){
        string es, x;
        cin>>es;
        for(int j = 0 ; j < es.size() ; ++j){
            x += harta[es[j]];
        }
        ++frecventa[x];
        if(frecventa[x] > subsirMaxim)
            subsirMaxim = frecventa[x];
    }

    if(subsirMaxim > 1)
        cout<<subsirMaxim;
    else
        cout<<"-1";
    return 0;
}