var obj = init();
Main();
function nextInt(){return myconv(next(),1);}
function nextStrArray(){return myconv(next(),2);}//半角スペース分割
function nextIntArray(){return myconv(next(),4);}//半角スペース + 数値化
function nextCharArray(){return myconv(next(),6);}//1文字分割
function next(){return obj.next();}
function hasNext(){return obj.hasNext();}
function myin(){return require("fs").readFileSync("/dev/stdin", "utf8").trim().split("\n");}
function init(){
  var inputFile = myin();
  var returnObj = {
    "list" : inputFile, "index" : 0, "max" : inputFile.length,
    "hasNext" : function(){return (this.index < this.max);},
    "next" : function(){if(!this.hasNext()){return "";}else{var returnInput = this.list[this.index];this.index++;return returnInput;}}
  };
  return returnObj;
}
function myout(t){console.log(t);}//標準出力
function myerr(t){console.error(t);}//標準エラー出力
//function myerr(t){return;}//デバッグOFF用
//[no]要素の扱い。数値型
//不明値、異常時:引数そのまま返す　1:数値へ変換
//2:半角SPで分割 4:半角SPで分割し、数値配列へ
//6:1文字で分割  7:1文字で分割し、数値配列へ
//8:半角SPで結合 9:改行で結合 0:文字なしで結合
function myconv(i,no){try{switch(no){case 1:return parseInt(i);case 2:return i.split(" ");case 4:return i.split(" ").map((a)=>Number(a));case 6:return i.split("");case 7:return i.split("").map((a)=>Number(a));case 8:return i.join(" ");case 9:return i.join("\n");case 0:return i.join("");default:return i;}}catch(e){return i;}}
function Main(){
  var one = nextIntArray();
  var X = one[0];
  var Y = one[1];
  var Z = one[2];
  var K = one[3];
  var xlist = nextIntArray();
  xlist.sort(function(a,b){
  	return b - a;
  });
  var ylist = nextIntArray();
  ylist.sort(function(a,b){
  	return b - a;
  });
  var zlist = nextIntArray();
  zlist.sort(function(a,b){
  	return b - a;
  });
  var maelist = new Array(X * Y);
  var output = [];
  for(var i = 0; i < X; i++){
    for(var j = 0; j < Y; j++){
      if((i + 1) * (j + 1) > K){
        break;
      }else{
        for(var l = 0; l < Z; l++){
          if((i + 1) * (j + 1) * (l + 1) <= K){
            output.push(xlist[i] + ylist[j] + zlist[l]);
          }
        }
      }
    }
  }
  output.sort(function(a,b){
  	return b - a;
  });
  myout(myconv(output,9));
}
