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);}
function PriorityQueue(){
  this.heap = [];
}
PriorityQueue.prototype = {
  push : function(x){
    var i = this.heap.length++;
    while(i){
      var j = i - 1 >> 1;
      if(x >= this.heap[j])break;
      this.heap[i] = this.heap[j];
      i = j;
    }
    this.heap[i] = x;
  },
  pop : function(){
    var r = this.heap[0];
    var x = this.heap.pop();
    var i = 0;
    var k = this.heap.length >> 1;
    while (i < k) {
      var j = (i << 1) + 1;
      if(this.heap[j] > this.heap[j+1])++j;
      if(x <= this.heap[j])break;
      this.heap[i] = this.heap[j];
      i = j;
    }
    if(this.heap.length)this.heap[i] = x;
    return r;
  },
  size : function(){return this.heap.length;},
  top : function(){return this.heap[0];},
};
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 pq = new PriorityQueue();
  pq.heap = xArray(0,K);
  for(var i = 0, j = 2, k; i < x; i++){
    if(j === 1)break;
    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 <= pq.top())break;
        pq.pop();
        pq.push(t);
      }
    }
  }
  var ans = [];
  while(pq.size())ans.push(pq.pop());
  return ans.reverse().join("\n");
}