using System;
using System.Linq;

class Program
{
    static void Main()
    {
        // Read input for the first array
        int n = int.Parse(Console.ReadLine()); // Read the size of the first array
        int[] A = Console.ReadLine().Split(' ').Select(int.Parse).ToArray(); // Read the first array

        // Read input for the second array
        int m = int.Parse(Console.ReadLine()); // Read the size of the second array
        int[] B = Console.ReadLine().Split(' ').Select(int.Parse).ToArray(); // Read the second array

        // Combine both arrays and get the union by converting to a HashSet to remove duplicates
        var union = A.Concat(B).ToHashSet();

        // Sort the union and convert it to an array
        var sortedUnion = union.OrderBy(x => x).ToArray();

        // Output the result
        Console.WriteLine(string.Join(" ", sortedUnion));
    }
}