54. Write a code to generate a alphabet pyramid pattern.

Write a code to generate a alphabet pyramid pattern.

Input Description:
Given an integer R indicates number of rows.

Where 1<=R<=26.

Output Description:
Print the alphabet pyramid pattern according to the given integer R.

Sample Input :
5
Sample Output :
    A
   ABC
  ABCDE
 ABCDEFG
ABCDEFGHI


n=int(input())

for i in range(n):
  p=65
  for j in range(i+1,n):
    print(" ",end="")
  
  for j in range (i):
    print(chr(p),end="")
    p=p+1
  for j in range (i+1):
    print(chr(p),end="")
    p=p+1

  print()