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Hi experts, when I tried to run the file, it takes much time and shows template.synctex.gz(busy). Scenario was that, what i meant I at a time I used texstudio and overleaf for same .cls. after that the problem started. I permanently deleted the files from overleaf, so that no conflict occur. In wind...

How do I make below table in [LaTeX]?

A B C
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1 2 P
Q
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2 3 X
Z
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