Problem: A permutation is a sequence of n integers from 1 to n, in which all numbers occur exactly once. For example, [1], [3, 5, 2, 1, 4], [1, 3, 2] are permutations, and [2, 3, 2], [4, 3, 1], [0] are not.

Polycarp was presented with a permutation p of numbers from 1 to n. However, when Polycarp came home, he noticed that in his pocket, the permutation p had turned into an array q according to the following rule: 

  * q_i = max(p_1, p_2, …, p_i). 



Now Polycarp wondered what lexicographically minimal and lexicographically maximal permutations could be presented to him.

An array a of length n is lexicographically smaller than an array b of length n if there is an index i (1 ≤ i ≤ n) such that the first i-1 elements of arrays a and b are the same, and the i-th element of the array a is less than the i-th element of the array b. For example, the array a=[1, 3, 2, 3] is lexicographically smaller than the array b=[1, 3, 4, 2].

For example, if n=7 and p=[3, 2, 4, 1, 7, 5, 6], then q=[3, 3, 4, 4, 7, 7, 7] and the following permutations could have been as p initially: 

  * [3, 1, 4, 2, 7, 5, 6] (lexicographically minimal permutation); 
  * [3, 1, 4, 2, 7, 6, 5]; 
  * [3, 2, 4, 1, 7, 5, 6]; 
  * [3, 2, 4, 1, 7, 6, 5] (lexicographically maximum permutation). 



For a given array q, find the lexicographically minimal and lexicographically maximal permutations that could have been originally presented to Polycarp.

Input

The first line contains one integer t (1 ≤ t ≤ 10^4). Then t test cases follow.

The first line of each test case contains one integer n (1 ≤ n ≤ 2 ⋅ 10^5).

The second line of each test case contains n integers q_1, q_2, …, q_n (1 ≤ q_i ≤ n).

It is guaranteed that the array q was obtained by applying the rule from the statement to some permutation p.

It is guaranteed that the sum of n over all test cases does not exceed 2 ⋅ 10^5.

Output

For each test case, output two lines: 

  * on the first line output n integers — lexicographically minimal permutation that could have been originally presented to Polycarp; 
  * on the second line print n integers — lexicographically maximal permutation that could have been originally presented to Polycarp; 

Example

Input


4
7
3 3 4 4 7 7 7
4
1 2 3 4
7
3 4 5 5 5 7 7
1
1


Output


3 1 4 2 7 5 6 
3 2 4 1 7 6 5 
1 2 3 4 
1 2 3 4 
3 4 5 1 2 7 6 
3 4 5 2 1 7 6 
1 
1 

Solution (in JAVA):

Solution:
import java.util.*;


public class Problem710E {

	public static void main(String[] args) {
		Scanner s=new Scanner(System.in);
		int t=s.nextInt();
		for(int tt=0;tt<t;tt++) {
			int n=s.nextInt();
			int arr[]=new int[n];
			HashSet<Integer> used=new HashSet<>();
			for(int i=0;i<n;i++) {
				arr[i]=s.nextInt();
				used.add(arr[i]);
			}
			ArrayList<Integer> remain_min=new ArrayList<>();
			for(int i=1;i<=n;i++) {
				if(used.contains(i)) {
					continue;
				}
				remain_min.add(i);
			}
			int index=0;
			int arr_index=-1;
			for(int i=0;i<n;i++) {
				if(arr_index==-1||arr[i]!=arr[arr_index]) {
					System.out.print(arr[i]+" ");
					arr_index=i;
				}else {
					System.out.print(remain_min.get(index)+" ");
					index++;
				}
			}
			System.out.println();
			TreeSet<Integer> remain_max=new TreeSet<>();
			remain_max.addAll(remain_min);
			arr_index=-1;
			for(int i=0;i<n;i++) {
				if(arr_index==-1||arr[i]!=arr[arr_index]) {
					System.out.print(arr[i]+" ");
					arr_index=i;
				}else {
					System.out.print(remain_max.floor(arr[i])+" ");
					remain_max.remove(remain_max.floor(arr[i]));
				}
			}
			System.out.println();
		}

	}

}