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Good morning everyone.
I am writing here to ask for help for an issue i cannot solve.
I am trying to generate the following table:

\begin{table}[H]
\centering
\resizebox{\textwidth}{!}{%
\begin{tabular}{|cccccccccccccc|}
\hline
\multicolumn{14}{|c|}{DRAG} \\ \hline
\multicolumn{2}{|c ...