public class MyClass {
    public static void main(String args[]) {
        java.util.Scanner scanner = new java.util.Scanner(System.in);
        int input = Integer.valueOf(scanner.nextLine());
        while (!(input >= 1 && input <= 20)) {
            input = Integer.valueOf(scanner.nextLine());
        }
        for(int i = 1; i <= input;i++) {
            for(int j = 0; j < i; j++) {
                System.out.print(i + " ");
            }
            System.out.print("\n");
        }
    }
}