#include <iostream>
#include <vector>

using namespace std;

void zameni(int &a, int &b) {
    int temp = a;
    a = b;
    b = temp;
}

int minimum(int a, int b, int c) {
    if(a>b) zameni(a,b);
    if(a>c) zameni(a,c);
    return a;
}

int main() {
    int n;
    cin >> n;
    vector<int> a_n(n);
    for(int &x : a_n) cin >> x;

    int m;
    cin >> m;
    vector<int> a_m(m);
    for(int &x : a_m) cin >> x;

    int p;
    cin >> p;
    vector<int> a_p(p);
    for(int &x : a_p) cin >> x;


    // tehnika TRI pokazivaca
    int i_n = 0;
    int i_m = 0;
    int i_p = 0;

    vector<int> rez;
    while(i_n < n && i_m < m && i_p < p) {
        if(a_n[i_n] == a_m[i_m] && a_m[i_m] == a_p[i_p]) {
            rez.push_back(a_n[i_n]);
            i_n++;
            i_m++;
            i_p++;
        }
        else {
            int min = minimum(a_n[i_n], a_m[i_m], a_p[i_p]);

            if(a_n[i_n] == min) i_n++;
            if(a_m[i_m] == min) i_m++;
            if(a_p[i_p] == min) i_p++;
        }
    }
    for(int x : rez) cout << x << endl;
}