#include<iostream>
#include<fstream>
#include<map>
#include<string>
#include<vector>

using namespace std;
string getmorse(string s1, map<char, std::string> alphabet)
{
	string morsed1;
	
	for (int i = 0;i < s1.size();i++)
		morsed1 += alphabet[s1.at(i)];
	return morsed1;
}
int main()
{
	map<char,std::string> alphabet;
	char start='a';
	string s,s1;
	char a;
	
	for (int i = 0;i < 26;i++)
	{
		cin >> a;
		cin >> s;
		alphabet[a] = s;
	}
	map<string, int> occurences;
	int N;
	cin >> N;
	vector<string> words;
	while (N > 0)
	{
		cin >> s;
		words.push_back(s);
		N--;
	}
	string s3;
	for (int i = 0;i < words.size();i++)
	{
		s3 = getmorse(words[i],alphabet);
		if (occurences.find(s3) != occurences.end())
		{
			occurences[s3]++;
		}
		else
			occurences[s3] = 1;
	}
	int maxl = 0;
	for (auto const ent : occurences)
	{
		if (ent.second > maxl)
		{
			maxl = ent.second;
		}
	}

	if (maxl <= 1)
		cout << -1;
	else
		cout << maxl;
	return 0;
}