using System;
using System.Text;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using static System.Console;
using static System.Math;
using System.IO;

namespace AtCoder
{
    public class Program
    {
        public static void Main(string[] args)
        {
            new Program().Solve(new ConsoleInput(Console.In, ' '));
        }

        public void Solve(ConsoleInput cin)
        {
            // 解答はココに書く
            var x = cin.ReadLong;
            var y = cin.ReadLong;
            var z = cin.ReadLong;
            var k = cin.ReadInt;

            var a = new List<long>();
            for (var i = 0; i < x; i++) {
                a.Add(cin.ReadLong);
            }
            a.Sort();
            a.Reverse();
            a = a.Take(k).ToList();

            var ab = new List<long>();
            for (var i = 0; i < y; i++) {
                var b = cin.ReadLong;
                foreach (var _a in a) {
                    ab.Add(_a+b);
                }
            }
            ab.Sort();
            ab.Reverse();
            ab = ab.Take(k).ToList();
            a = null;
            
            var abc = new List<long>();
            for (var i = 0; i < z; i++) {
                var c = cin.ReadLong;
                foreach (var _ab in ab) {
                    abc.Add(_ab+c);
                }
            }
            abc.Sort();
            abc.Reverse();
            abc = abc.Take(k).ToList();
            ab = null;

            var sw = new StreamWriter(Console.OpenStandardOutput()){AutoFlush = false};
            Console.SetOut(sw);
            foreach (var _abc in abc) {
                WriteLine(_abc);
            }
            Console.Out.Flush();
            
        }
    }

    public class ConsoleInput
    {
        private readonly System.IO.TextReader _stream;
        private char _separator = ' ';
        private Queue<string> inputStream;
        public ConsoleInput(System.IO.TextReader stream, char separator = ' ')
        {
            this._separator = separator;
            this._stream = stream;
            inputStream = new Queue<string>();
        }
        public string Read
        {
            get
            {
                if (inputStream.Count != 0) return inputStream.Dequeue();
                string[] tmp = _stream.ReadLine().Split(_separator);
                for (int i = 0; i < tmp.Length; ++i)
                    inputStream.Enqueue(tmp[i]);
                return inputStream.Dequeue();
            }
        }
        public string ReadLine { get { return _stream.ReadLine(); }}
        public int ReadInt { get { return int.Parse(Read); }}
        public long ReadLong { get { return long.Parse(Read); }}
        public double ReadDouble { get { return double.Parse(Read); }}
        public string[] ReadStrArray(long N) { var ret = new string[N]; for (long i = 0; i < N; ++i) ret[i] = Read; return ret;}
        public int[] ReadIntArray(long N) { var ret = new int[N]; for (long i = 0; i < N; ++i) ret[i] = ReadInt; return ret;}
        public long[] ReadLongArray(long N) { var ret = new long[N]; for (long i = 0; i < N; ++i) ret[i] = ReadLong; return ret;}
    }
}

Measured memory_bytes: 55052