\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
The table below shows the possible outcomes when selecting two letters at random from the word "CODE" with replacement (after choosing a letter, it is put back before the next selection).
\(\begin{aligned} & \textcolor{colorprop}{\text{letter 2}} \\ \textcolor{colordef}{\text{letter 1}} \end{aligned} \) \(\textcolor{colorprop}{C}\) \(\textcolor{colorprop}{O}\) \(\textcolor{colorprop}{D}\) \(\textcolor{colorprop}{E}\)
\(\textcolor{colordef}{C}\) \(\textcolor{colordef}{C}\textcolor{colorprop}{C}\) \(\textcolor{colordef}{C}\textcolor{colorprop}{O}\) \(\textcolor{colordef}{C}\textcolor{colorprop}{D}\) \(\textcolor{colordef}{C}\textcolor{colorprop}{E}\)
\(\textcolor{colordef}{O}\) \(\textcolor{colordef}{O}\textcolor{colorprop}{C}\) \(\textcolor{colordef}{O}\textcolor{colorprop}{O}\) \(\textcolor{colordef}{O}\textcolor{colorprop}{D}\) \(\textcolor{colordef}{O}\textcolor{colorprop}{E}\)
\(\textcolor{colordef}{D}\) \(\textcolor{colordef}{D}\textcolor{colorprop}{C}\) ? \(\textcolor{colordef}{D}\textcolor{colorprop}{D}\) \(\textcolor{colordef}{D}\textcolor{colorprop}{E}\)
\(\textcolor{colordef}{E}\) \(\textcolor{colordef}{E}\textcolor{colorprop}{C}\) \(\textcolor{colordef}{E}\textcolor{colorprop}{O}\) \(\textcolor{colordef}{E}\textcolor{colorprop}{D}\) \(\textcolor{colordef}{E}\textcolor{colorprop}{E}\)
Find the missing outcome.