import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
while(scan.hasNextInt()) {
int n = scan.nextInt();
for(int i = 1; i <= n; i++) {
for(int j = 1; j <= i; j++) {
System.out.print(j + " ");
}
System.out.println();
}
}
}
}