@echo off
for /f "tokens=1-4 delims= " %%a in (x3.txt) do (
  for /f "delims=" %%i in ('findstr "%%a" 15.txt ^|findstr "%%b" ^|findstr "%%c" ^|findstr "%%d"') do ( 
    if not exist 1.txt (echo.%%i>>1.txt) else (findstr /c:"%%i" 1.txt >nul ||echo.%%i>>1.txt)
  )
)
findstr /v /g:1.txt 15.txt
del 1.txt
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@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%i in (15.txt) do (
    set "str=%%i,"
    for /f "delims=" %%j in (x3.txt) do (
        if defined str (
           for %%k in (%%j) do set "str=!str:%%k,=!"
           if "!str:~6!" == "" set "str="
        )
    )
    if defined str echo;%%i
)
pause
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