import java.util.*;
public class Main{
public static void main(String args[]){
Scanner sc = new Scanner(System.in);
while(sc.hasNext()){
int n = sc.nextInt();
int[][] result = new int[n][];
int t = 1;
for(int i = 0;i<n;i++){
result[i] = new int[n-i];
for(int j=0;j<i+1;j++){
result[i-j][j] = t;
t++;
}
}
for(int[] a:result){
for(int a1 : a){
System.out.print(a1+" ");
}
System.out.println();
}
}
}
}