DAIC

@echo off
set "STR1=A 2 B 2"
for /f "tokens=1-4" %%i in ("%STR1%") do (
    set "STR2=%%i*%%j,%%k*%%l"
)
echo %STR2%
pause
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Linuxer

set star1=A^*1,B^*1,D^*1
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set star2=A^*2,B^*2
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