/* 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 i,j;
		for(i=1;i<=10;i++)
		{
			System.out.println("3x"+i+"="+(3*i));
		}
		
		
		
		for( i=10; i>0 ;i--){
			for( j=0;j<i;j++){
				System.out.print(" ");
			}
			if(i==10)
				System.out.print("*");
			for(j=i ;j<10 ;j++){
				System.out.print("*");
			}
			for(j=i ;j<10 ;j++){
				System.out.print("*");
			}
			System.out.print("\n");
			
		}
		for( i=0; i<11 ;i++){
			for( j=0;j<i;j++){
				System.out.print(" ");
			}
			if(i==10){
				System.out.print("*");
				break;
			}
			for(j=i ;j<10 ;j++){
				System.out.print("*");
			}
			for(j=i ;j<10 ;j++){
				System.out.print("*");
			}
			System.out.print("\n");
			
		}
		 


	}
}