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:
//package codeforces.problem.april;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.*;

/*
https://codeforces.com/problemset/problem/1506/E
q = 3 3 3 4 5
p_max = 3 2 1 4 5
p_min = 3 1 2 4 5

q 5 5 5 5 5
m = 1 2 3 4 5
max = 5 4 3 2 1

q 3 3 4 4 7 7 7
min = 3 1 4 2 7 5 6
max = 3 2 4 1 7 6 5
 */
public class Task1506_E {

    static void solve() {
        int n = FS.nextInt();
        int[] a = FS.readArray(n);

        PriorityQueue<Integer> minq = new PriorityQueue<>();
        PriorityQueue<Integer> maxq = new PriorityQueue<>(Collections.reverseOrder());
        List<Integer> minv = new ArrayList<>();
        List<Integer> maxv = new ArrayList<>();

        int prev = -1;
        int add = 1;
        for (int i = 0; i < n; i++) {
            if (a[i] != prev) {
                minv.add(a[i]);
                maxv.add(a[i]);
                while (add < a[i]) {
                    minq.add(add);
                    maxq.add(add);
                    add++;
                }
                add++;
            } else {
                int mn = minq.poll();
                int mx = maxq.poll();
                minv.add(mn);
                maxv.add(mx);
            }

            prev = a[i];
        }

        FS.printList(minv);
        FS.printList(maxv);
    }

    public static void main(String[] args) {
        int T = FS.nextInt();
        for (int tt = 0; tt < T; tt++) {
            solve();
        }
        FS.pt.close();
    }

    static class FS {
        private static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        private static StringTokenizer st = new StringTokenizer("");
        static PrintWriter pt = new PrintWriter(System.out);

        static String next() {
            while (!st.hasMoreTokens())
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            return st.nextToken();
        }

        static int nextInt() {
            return Integer.parseInt(next());
        }

        static int[] readArray(int n) {
            int[] a = new int[n];
            for (int i = 0; i < n; i++) a[i] = nextInt();
            return a;
        }

        static double nextDouble() {
            return Double.parseDouble(next());
        }

        static int[][] read2Array(int n, int m) {
            int[][] a = new int[n][m];
            for (int i = 0; i < n; i++) {
                for (int j = 0; j < m; j++) {
                    a[i][j] = nextInt();
                }
            }
            return a;
        }

        static long[][] read2ArrayL(int n, int m) {
            long[][] a = new long[n][m];
            for (int i = 0; i < n; i++) {
                for (int j = 0; j < m; j++) {
                    a[i][j] = nextLong();
                }
            }
            return a;
        }

        void printArr(long[] arr) {
            for (long value : arr) {
                pt.print(value);
                pt.print(" ");
            }
            pt.println();
        }

        static long[] readArrayL(int n) {
            long[] a = new long[n];
            for (int i = 0; i < n; i++) a[i] = nextLong();
            return a;
        }

        static void printArr(int[] arr) {
            for (int value : arr) {
                pt.print(value);
                pt.print(" ");
            }
            pt.println();
        }

        static void printArrL(int[] arr) {
            for (int value : arr) {
                pt.print(value);
                pt.print(" ");
            }
            pt.println();
        }

        static void print2Arr(int[][] arr, int n, int m) {
            for (int i = 0; i < n; i++) {
                for (int j = 0; j < m; j++) {
                    pt.print(arr[i][j]);
                    pt.print(" ");
                }
                pt.println();
            }
            pt.println();
        }

        static void print2Arr(long[][] arr, int n, int m) {
            for (int i = 0; i < n; i++) {
                for (int j = 0; j < m; j++) {
                    pt.print(arr[i][j]);
                    pt.print(" ");
                }
                pt.println();
            }
            pt.println();
        }

        static List<Long> readListLong(int n) {
            List<Long> list = new ArrayList<>(n);
            for (int i = 0; i < n; i++) {
                list.add(nextLong());
            }
            return list;
        }

        static List<Integer> readListInt(int n) {
            List<Integer> list = new ArrayList<>(n);
            for (int i = 0; i < n; i++) {
                list.add(nextInt());
            }
            return list;
        }

        static <T> void printList(List<T> list) {
            for (T value : list) {
                pt.print(value);
                pt.print(" ");
            }
            pt.println();
        }

        static void close() {
            pt.close();
        }

        static long nextLong() {
            return Long.parseLong(next());
        }
    }

    static class Mat {
        public static long pow(long a, long exp) {
            return (long) Math.pow(a, exp);
        }
    }

    static class NumberTheory {
        public static boolean isPrime(long n) {
            if (n <= 1) return false;
            if (n < 4) return true;
            if (n % 2 == 0) return false;
            if (n % 3 == 0) return false;

            for (int i = 5, next = 2; i * i <= n; i += next, next = 6 - next)
                if (n % i == 0) return false;

            return true;
        }

        public static long gcd(long a, long b) {
            while (b != 0) {
                long tmp = a % b;
                a = b;
                b = tmp;
            }
            return a;
        }

        public static long lcm(long a, long b) {
            return a * b / gcd(a, b);
        }

        public static List<Long> primeFactors(long n) {
            List<Long> ans = new ArrayList<>();
            while (n % 2 == 0) {
                ans.add(2L);
                n /= 2;
            }

            // n must be odd at this point.  So we can
            // skip one element (Note i = i + 2)
            for (long i = 3; i <= Math.sqrt(n); i += 2) {
                // While i divides n, print i and divide n
                while (n % i == 0) {
                    ans.add(i);
                    n /= i;
                }
            }

            // This condition is to handle the case when
            // n is a prime number greater than 2
            if (n > 2) {
                ans.add(n);
            }
            return ans;
        }

        static long fact(long n) {
            if (n == 0 || n == 1) return 1L;
            long r = 1;
            for (int i = 1; i <= n; i++) {
                r *= i;
            }
            return r;
        }

        static long fact(long n, long mod) {
            if (n <= 1) return 1;
            long ans = 1;
            for (int i = 1; i <= n; i++) {
                ans = (ans * i) % mod;
            }
            return ans;
        }

        static long fastExp(long x, long n, long mod) {
            long ans = 1;
            while (n > 0) {
                if (n % 2 == 1) ans = (ans * x) % mod;
                x = (x * x) % mod;
                n /= 2;
            }
            return ans;
        }
    }

    static class BinarySearch {
        public static int lowerBound(int[] arr, int key) {
            int low = 0;
            int high = arr.length - 1;
            while (low < high) {
                int mid = low + (high - low) / 2;
                if (arr[mid] >= key) {
                    high = mid;
                } else {
                    low = mid + 1;
                }
            }
            return low;
        }

        public static int lowerBound(long[] arr, long key) {
            int low = 0;
            int high = arr.length - 1;
            while (low < high) {
                int mid = low + (high - low) / 2;
                if (arr[mid] >= key) {
                    high = mid;
                } else {
                    low = mid + 1;
                }
            }
            return low;
        }

        public static <T extends Comparable<T>> int lowerBound(List<T> arr, T key) {
            int low = 0;
            int high = arr.size() - 1;
            while (low < high) {
                int mid = low + (high - low) / 2;
                if (arr.get(mid).compareTo(key) >= 0) {
                    high = mid;
                } else {
                    low = mid + 1;
                }
            }
            return low;
        }

        public static int upperBound(int[] arr, int key) {
            int low = 0;
            int high = arr.length - 1;
            while (low < high) {
                int mid = low + (high - low + 1) / 2;
                if (arr[mid] <= key) {
                    low = mid;
                } else {
                    high = mid - 1;
                }
            }
            return low;
        }

        public static int upperBound(long[] arr, long key) {
            int low = 0;
            int high = arr.length - 1;
            while (low < high) {
                int mid = low + (high - low + 1) / 2;
                if (arr[mid] <= key) {
                    low = mid;
                } else {
                    high = mid - 1;
                }
            }
            return low;
        }

        public static <T extends Comparable<T>> int upperBound(List<T> arr, T key) {
            int low = 0;
            int high = arr.size() - 1;
            while (low < high) {
                int mid = low + (high - low + 1) / 2;
                if (arr.get(mid).compareTo(key) >= 0) {
                    low = mid;
                } else {
                    high = mid - 1;
                }
            }
            return low;
        }
    }

    static class Pair<T, K> {
        T first;
        K second;

        public Pair(T first, K second) {
            this.first = first;
            this.second = second;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;
            Pair<?, ?> pair = (Pair<?, ?>) o;
            return Objects.equals(first, pair.first) &&
                    Objects.equals(second, pair.second);
        }

        @Override
        public int hashCode() {
            return Objects.hash(first, second);
        }
    }
}