var GET=(function(){function f(s){return new g(s);}function g(s){this._s=s.trim().split("\n");this._y=0;}g.prototype.a=function(f){var s=this._s, y=this._y, r;if(typeof s[y]==="string")s[y]=s[y].split(" ").reverse();r=s[y].pop();if(!s[y].length)this._y++;return f?r:+r;};g.prototype.l=function(f){var s=this._s[this._y++].split(" ");return f?s:s.map(a=>+a);};g.prototype.m=function(n,f){var r=this._s.slice(this._y,this._y+=n).map(a=>a.split(" "));return f?r:r.map(a=>a.map(a=>+a));};g.prototype.r=function(n,f){var r=this._s.slice(this._y,this._y+=n);return f?r:r.map(a=>+a);};return f;})();
var o=GET(require("fs").readFileSync("/dev/stdin","utf8"));
function xArray(v){var a=arguments,l=a.length,r="Array(a["+--l+"]).fill(v)";while(--l)r="Array(a["+l+"]).fill(0).map(x=>"+r+")";return eval(r);}

console.log(main());
function main(){
  var x = o.a();
  var y = o.a();
  var z = o.a();
  var K = o.a();
  var a = o.l().sort((a,b)=>b-a);
  var b = o.l().sort((a,b)=>b-a);
  var c = o.l().sort((a,b)=>b-a);
  var ok = 3, ng = a[0]+b[0]+c[0]+1;
  while(ng-ok>1){
    var m = Math.floor((ok+ng)/2);
    if(solve(m))ok = m;
    else ng = m;
  }
  var ans = [];
  for(var i = 0, j = 1, k; i < x; i++){
    for(j = 0 , k = 1; j < y; j++){
      if(k === 0)break;
      for(k = 0; k < z; k++){
        var t = a[i]+b[j]+c[k];
        if(t <= ok)break;
        ans.push(t);
      }
    }
  }
  ans.sort((a,b)=>b-a);
  while(ans.length < K)ans.push(ok);
  return ans.join("\n");

  function solve(p){
    var cnt = 0;
    for(var i = 0, j = 1, k; i < x; i++){
      if(j === 0)return;
      for(j = 0, k = 1; j < y; j++){
        if(k === 0)break;
        for(k = 0; k < z; k++){
          if(a[i]+b[j]+c[k] < p)break;
          cnt++;
          if(K === cnt)return true;
        }
      }
    }
  }
}
