import java.util.*;
public class Square2 {
	
	public static void main(String[] args) {
		
		Scanner stdin = new Scanner(System.in);
		System.out.println("Enter n.");
		int n = stdin.nextInt();
		
		int[][] sqr = new int[n][n];
		
		for (int i=0; i<n; i++) {
			for (int j=0; j<n; j++) {
				if (i < j)
					sqr[i][j] = i+1;
				else	
					sqr[i][j] = j+1; 
			}
		}
		
		for (int i=0; i<n; i++) {
			for (int j=0; j<n; j++)
				System.out.print(sqr[i][j]+"\t");
			System.out.println();
		}
	}
}