#include <iostream>
#include <set>
using namespace std;

int main() {
    int n, m, num;
    set<int> result;
    cin >> n;
    while (n--) {
        cin >> num;
        result.insert(num);
    }
    cin >> m;
    while (m--) {
        cin >> num;
        result.insert(num);
    }
    for (const int& x : result) {
        cout << x << " ";
    }
    return 0;
}