@echo off
setlocal ENABLEDELAYEDEXPANSION
set/a count=0
SET/P "NAME= > "
FOR %%B IN (abcdefghijklmnopqrstuvwxyz) DO (SET LETRASX=%%B)
FOR %%C IN (ZYXWVUTSRQPONMLKJIHGFEDCBA) DO (SET LETRASY=%%C)
:e
set/a count+=1
CALL SET FINAL=%%LETRASX:~-%count%,1%%
CALL SET FINALX=%%LETRASY:~-%count%,1%%
set NAME=!NAME:%FINAL%=%FINALX%!
if %count% == 28 (echo.%name%) else (goto:e)