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

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int t = sc.nextInt();
        StringBuilder sb = new StringBuilder();
        int[][] base = new int[][]{{0, 1, 1}, {1, 2, 2}, {1, 2, 2}};
        while (t-- > 0) {
            int h = sc.nextInt();
            int w = sc.nextInt();
            for (int i = 0; i < h; i++) {
                for (int j = 0; j < w; j++) {
                    if (j > 0) {
                        sb.append(" ");
                    }
                    sb.append(base[i % 3][j % 3]);
                }
                sb.append("\n");
            }
        }
        System.out.print(sb);
    }
    
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}