Test=int(input())
for I in range(Test):
N=int(input())
Lista=list(map(int,input().split()))
NL=[]
K=0
Cont=0
while(Cont<N):
if(Lista[K] not in NL):
NL=NL+[Lista[K]]
Cont+=1
K+=1
Cad=""
for J in range(N):
Cad=Cad+str(NL[J])+" "
print(Cad[:len(Cad)-1])
130. Surrounded Regions | 129. Sum Root to Leaf Numbers |
120. Triangle | 102. Binary Tree Level Order Traversal |
96. Unique Binary Search Trees | 75. Sort Colors |
74. Search a 2D Matrix | 71. Simplify Path |
62. Unique Paths | 50. Pow(x, n) |
43. Multiply Strings | 34. Find First and Last Position of Element in Sorted Array |
33. Search in Rotated Sorted Array | 17. Letter Combinations of a Phone Number |
5. Longest Palindromic Substring | 3. Longest Substring Without Repeating Characters |
1312. Minimum Insertion Steps to Make a String Palindrome | 1092. Shortest Common Supersequence |
1044. Longest Duplicate Substring | 1032. Stream of Characters |
987. Vertical Order Traversal of a Binary Tree | 952. Largest Component Size by Common Factor |
212. Word Search II | 174. Dungeon Game |
127. Word Ladder | 123. Best Time to Buy and Sell Stock III |
85. Maximal Rectangle | 84. Largest Rectangle in Histogram |
60. Permutation Sequence | 42. Trapping Rain Water |