Pattern{Right Angle Triangle}

import java.io.*;
class INVERTED_RIGHT_TRIANGLE
{
    public static void main(String args[])throws IOException
    {
        InputStreamReader reader=new InputStreamReader(System.in);
        BufferedReader input=new BufferedReader(reader);
        System.out.println("ENTER THE NUMBER TILL WHERE TRIANGLE SHOULD CONTINUE");
        int n=Integer.parseInt(input.readLine());
        int ch=1;
        System.out.println("");
        for(int i=0;i<=n;i++)
        {
            for(int j=n;j>=i;j--)
            {
               
                System.out.print(ch+"  ");
                ch++;
            }
            System.out.println("");
            ch='A';
        }
    }
}