@echo on
cd
setlocal 
set /a Col=1
set /a ToCol=3

:ColLoop
Set /a row=1
set /a ToRow=3
:RowLoop

set NewFileName = 
set NewThumbName = %NewFileName%_tb
Copy  Img_%col%_%row%.jpg Img_%ToCol%_%ToRow%.jpg
Copy  Img_%Col%_%row%_tb.jpg Img_%ToCol%_%ToRow%_tb.jpg
Copy  Img_blank.jpg Img_%Col%_%row%.jpg
copy  Img_blank_tb.jpg Img_%Col%_%row%_tb.jpg
pause 
set /a row=%row%+1
set /a ToRow=%ToRow%+1
pause
if not %Row%==4 goto RowLoop
set /a Col=%Col%+1
set /a ToCol=%ToCol%+1
if not %col%==3 goto ColLoop