### BUGGY CODE ###

# abcde    s=input()    s='abcde'
# abcde    s=list(input())    s=['a', 'b', 'c', 'd', 'e']
# 5(1つだけ)    a=int(input())    a=5
# 1 2    | x,y = s_inpl()   |    x=1,y=2
# 1 2 3 4 5 ... n 　    li = input().split()    li=['1','2','3',...,'n']
# 1 2 3 4 5 ... n 　    li = inpl()    li=[1,2,3,4,5,...,n]
# FFFTFTTFF 　    li = input().split('T')    li=['FFF', 'F', '', 'FF']

# INPUT
# 3
# hoge
# foo
# bar
# ANSWER
# n=int(input())
# string_list=[input() for i in range(n)]

import math
import copy
from collections import defaultdict
from collections import Counter
from collections import deque
# 直積 A={a, b, c}, B={d, e}:のとき，A×B={(a,d),(a,e),(b,d),(b,e),(c,d),(c,e)}: product(A, B)
from itertools import product
# 階乗 P!: permutations(seq), 順列 {}_len(seq) P_n: permutations(seq, n)
from itertools import permutations
# 組み合わせ {}_len(seq) C_n: combinations(seq, n)
from itertools import combinations
from bisect import bisect_left, bisect_right
# import numpy as np

def inside(y, x, H, W):
    return 0 <= y < H and 0 <= x < W

# 四方向: 右, 下, 左, 上
dy = [0, -1, 0, 1]
dx = [1, 0, -1, 0]

def i_inpl(): return int(input())
def s_inpl(): return map(int,input().split())
def l_inpl(): return list(map(int, input().split()))
INF = float("inf")
MAX_DIGIT = 50

############
############
############

X, Y, Z, K = l_inpl()
A = l_inpl()
B = l_inpl()
C = l_inpl()

top_k_AB = []
for i in range(X):
    for j in range(Y):
        top_k_AB.append(A[i] + B[j])

top_k_AB.sort(reverse=True)
top_k_AB = top_k_AB[:K]

top_k_ABC = []
for i in range(len(top_k_AB)):
    for j in range(Z):
        top_k_ABC.append(top_k_AB[i]+C[j])

top_k_ABC.sort(reverse=True)
print("\n".join([ str(s) for s in top_k_ABC[:K]]))


### FIXED CODE ###

# abcde    s=input()    s='abcde'
# abcde    s=list(input())    s=['a', 'b', 'c', 'd', 'e']
# 5(1つだけ)    a=int(input())    a=5
# 1 2    | x,y = s_inpl()   |    x=1,y=2
# 1 2 3 4 5 ... n 　    li = input().split()    li=['1','2','3',...,'n']
# 1 2 3 4 5 ... n 　    li = inpl()    li=[1,2,3,4,5,...,n]
# FFFTFTTFF 　    li = input().split('T')    li=['FFF', 'F', '', 'FF']

# INPUT
# 3
# hoge
# foo
# bar
# ANSWER
# n=int(input())
# string_list=[input() for i in range(n)]

import math
import copy
from collections import defaultdict
from collections import Counter
from collections import deque
# 直積 A={a, b, c}, B={d, e}:のとき，A×B={(a,d),(a,e),(b,d),(b,e),(c,d),(c,e)}: product(A, B)
from itertools import product
# 階乗 P!: permutations(seq), 順列 {}_len(seq) P_n: permutations(seq, n)
from itertools import permutations
# 組み合わせ {}_len(seq) C_n: combinations(seq, n)
from itertools import combinations
from bisect import bisect_left, bisect_right
# import numpy as np

def inside(y, x, H, W):
    return 0 <= y < H and 0 <= x < W

# 四方向: 右, 下, 左, 上
dy = [0, -1, 0, 1]
dx = [1, 0, -1, 0]

def i_inpl(): return int(input())
def s_inpl(): return map(int,input().split())
def l_inpl(): return list(map(int, input().split()))
INF = float("inf")
MAX_DIGIT = 50

############
############
############

X, Y, Z, K = l_inpl()
A = l_inpl()
B = l_inpl()
C = l_inpl()

top_k_AB = []
for i in range(X):
    for j in range(Y):
        top_k_AB.append(A[i] + B[j])

top_k_AB.sort(reverse=True)
top_k_AB = top_k_AB[:K]

top_k_ABC = []
for i in range(len(top_k_AB)):
    for j in range(Z):
        top_k_ABC.append(top_k_AB[i]+C[j])

top_k_ABC.sort(reverse=True)
print("\n".join([ str(s) for s in top_k_ABC[:K]]))