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@echo off&setlocal enabledelayedexpansionfor /f "delims=" %%i in (1.txt) do ( set v=%%i if "!v:~0,1!"=="a" (echo !v!) else ( for /f "tokens=1,2 delims=a" %%j in ("%%i") do ( set str=%%j set str=!str:0=! echo !str!a%%k)))pauseCOPY
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