import java.util.Scanner;
class Demo{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		//n是矩阵有几行
		int n=sc.nextInt();
		
		int[][] myArr= new int[n][];
		for(int i=1,j=0;j<n;i++,j++){
			myArr[j]=new int[i];
		}
		printArray2(myArr);				
	}
	
	public static void printArray2(int[][] myArray){
		for(int i=0,rCount=myArray.length;i<rCount;i++){
			for(int j=0,cCount=myArray[i].length;j<cCount;j++){
				System.out.print(myArray[i][j]+" ");
			}
			System.out.println();
		}
	}
}