smss

@echo off
setlocal enabledelayedexpansion
for /r %%a in (*) do (
    if not "%%a"=="%~f0" (
        set "file=%%a"
        set "folder=%%~dpa!file:~0,3!"
        if not exist "!folder!" md "!folder!"
        move "%%a" "!folder!\" >nul
    )
)
pause
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