Problem: Artem is building a new robot. He has a matrix a consisting of n rows and m columns. The cell located on the i-th row from the top and the j-th column from the left has a value a_{i,j} written in it. 

If two adjacent cells contain the same value, the robot will break. A matrix is called good if no two adjacent cells contain the same value, where two cells are called adjacent if they share a side. 

Artem wants to increment the values in some cells by one to make a good.

More formally, find a good matrix b that satisfies the following condition — 

  * For all valid (i,j), either b_{i,j} = a_{i,j} or b_{i,j} = a_{i,j}+1. 



For the constraints of this problem, it can be shown that such a matrix b always exists. If there are several such tables, you can output any of them. Please note that you do not have to minimize the number of increments.

Input

Each test contains multiple test cases. The first line contains the number of test cases t (1 ≤ t ≤ 10). Description of the test cases follows.

The first line of each test case contains two integers n, m (1 ≤ n ≤ 100, 1 ≤ m ≤ 100) — the number of rows and columns, respectively.

The following n lines each contain m integers. The j-th integer in the i-th line is a_{i,j} (1 ≤ a_{i,j} ≤ 10^9).

Output

For each case, output n lines each containing m integers. The j-th integer in the i-th line is b_{i,j}.

Example

Input


3
3 2
1 2
4 5
7 8
2 2
1 1
3 3
2 2
1 3
2 2


Output


1 2
5 6
7 8
2 1
4 3
2 4
3 2

Note

In all the cases, you can verify that no two adjacent cells have the same value and that b is the same as a with some values incremented by one. 

Solution (in JAVA):

Solution:
/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
public class Main
{
    
    //Fast I/O Class
    static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    }
    
     //End Of Fast I/O Class
    
    
    
    
    public static boolean needIncrese(int [][]arr ,int  i , int j,int  n, int m){
        
        if(i>0&&arr[i][j]==arr[i-1][j]){
           return true; 
        }
        
         if(i<n-1&&arr[i][j]==arr[i+1][j]){
           return true; 
        }
        
         if(j>0&&arr[i][j]==arr[i][j-1]){
           return true; 
        }
        
         if(j<m-1&&arr[i][j]==arr[i][j+1]){
           return true; 
        }
        
        
        
        return false;
    }
    
    
    
   public static boolean isSafe(int [][]arr,int i,int j,int  n,int m){
        
        
        
       if(i>0&&arr[i][j]==arr[i-1][j] - 1){
           return false; 
        }
        
         if(i<n-1&&arr[i][j]==arr[i+1][j] - 1){
           return false; 
        }
        
         if(j>0&&arr[i][j]==arr[i][j-1] - 1){
           return false; 
        }
        
         if(j<m-1&&arr[i][j]==arr[i][j+1] - 1){
           return false; 
        }  
        
        
        
        
        
      return true;  
    }
    
    
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		FastReader sc = new FastReader(); 
		int t = sc.nextInt();
		for(int tc =1;tc<=t;tc++){
		   	int n = sc.nextInt();
		   		int m = sc.nextInt();

              int [][]arr = new int[n][m];
              
              for(int i=0;i<n;i++){
                  for(int j=0;j<m;j++){
                   arr[i][j] = sc.nextInt();   
                      
                  }
              }
              
              for(int i=0;i<n;i++){
                  for(int j=0;j<m;j++){
                   if((i+j)%2==0&&arr[i][j]%2!=0){
                        arr[i][j]++;
                       
                   } else if ((i+j)%2!=0&&arr[i][j]%2==0){
                        arr[i][j]++;
                       
                   }
                      
                  }
              }
              
                  
                  
                  
                  
                  for(int i=0;i<n;i++){
                  for(int j=0;j<m;j++){
                  System.out.print(arr[i][j]+" ");
                      
                  }
                  System.out.println();
              }
	
		}
	}
}