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

public class Main {
    
    public static Scanner sc = new Scanner(System.in);
    public static PrintWriter pw = new PrintWriter(System.out);
    
    public static void main(String[] args) {
        
        int t = sc.nextInt();
        while( t > 0 ) {
            solve();
            t--;
        }
        
        pw.flush();
        
    }
    
    static void solve() {
        
        int H = sc.nextInt();
        int W = sc.nextInt();
        int[][] g = {
            {2,2,1},
            {2,2,1},
            {1,1,0}
        };
        int idi = H%3 == 1 ? 2 : 0;
        int idj = W%3 == 1 ? 2 : 0;
        for( int i = 0; i < H; i++ ) {
            for( int j = 0; j < W; j++ ) {
                pw.print(g[(idi+i)%3][(idj+j)%3]+" ");
            }
            pw.println();
        }
        
        pw.println();
        
    }
    
}