@echo off
setlocal enabledelayedexpansion
set min=2
set max=4
set n=0
for /f "delims=" %%i in (a.txt) do (
  set /a n+=1
  if !n! geq %min% (
    if !n! leq %max% (
      echo %%i
    ) else goto break
  )
)
:break
endlocal
pause
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