x86 - Trying to flip a triangle in assembly language

Question

INCLUDE Irvine32.inc
.code
main PROC

        mov ecx, 6 
L1:
        call Proc1
        call CRLF
        loop L1

        exit
main ENDP

proc1 PROC  USES ecx
        mov  al, 'A'
L2:     call WriteChar
        inc al
        loop L2
        ret
proc1 ENDP

END main

The output of my code is

ABCDEF
ABCDE
ABCD
ABC
AB
A

In a triangle form going down but I need to flip it to where it is

A
AB
ABC
ABCD
ABCDE
ABCDEF

Edit:

Trying to mirror the right triangle.

A            A
AB          BA
ABC        CBA
ABCD      DCBA
ABCDE    EDCBA
ABCDEF  FEDCBA

Answer 1

Waitting for answers