/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		int n=4, k=0;
		
		for(int i=0; i<= n; i++){
			for(int j=0; j<=k; j++){
				System.out.print("*");
			}
			k++;
			System.out.print("\n");
		}
	}
}