32. Write a code to generate a aplhabet half pyramid pattern.

Write a code to generate a aplhabet half pyramid pattern.

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

Where 1<=R<=26.

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

Sample Input :
5
Sample Output :
EDCBA
EDCB
EDC
ED
E


def pattern(n):
    let = 65
    for i in range(n):
        for j in range(n-1, i-1, -1):
            print(chr(let+j), end = "")
        print()
        
n = int(input())
pattern(n)