package printer;

import java.util.Scanner;

public class Printer {

	public static void main(String[] args) {

		Scanner input = new Scanner(System.in);
		System.out.println("-----TRIANGLE-----");
		System.out.println("Please enter a letter.");
		String letter = input.nextLine();

		String bigIron = letter;
		for (int triangle = 1; triangle<=20; triangle++) {
			 System.out.println(bigIron);
			 bigIron += letter;
		}

		for (int triangle = 1; triangle<=21; triangle++) {

			 System.out.println(bigIron);
			 bigIron = bigIron.substring(0, bigIron.length()-1);
		}

	}

}