@echo off & setlocal enabledelayedexpansion
pushd "D:\test\"
if "%1" == "OK" (
    for /f "delims=" %%a in ('dir /b/s^|findstr \.[0-9][0-9]*$') do (
        set "str=0000000000%%~xa"
        set "str=!str:.=!"
        echo,%%~dpna/!str:~-10!%%~xa
    )
) else (
    for /f "tokens=1*delims=/" %%a in ('"%~0" OK^|sort /r') do (
        if /i "%%a" == "!file!" (
            echo Del "%%a%%~xb"
        ) else set "file=%%a"
    )
    pause
)
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