package com.company.Lists;

import java.util.*;

public class UnunionLists {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        List<String> primalList = new ArrayList<>(Arrays.asList(scan.nextLine().split(" ")));

        int n = Integer.parseInt(scan.nextLine());

        for (int i = 0; i < n; i++) {

            List<String> currentList = new ArrayList<>(Arrays.asList(scan.nextLine().split(" ")));

            for (int j = currentList.size() - 1; j >= 0; j--) {
                if (!primalList.contains(currentList.get(j))) {
                    primalList.add(currentList.get(j));
                } else {
                    primalList.removeAll(Collections.singleton(currentList.get(j)));
                }
            }
        }

        Collections.sort(primalList);

        for (String num : primalList) {
            System.out.print(num + " ");
        }
    }
}