Determine the number of cells that require the following products. In the table it is indicated for each product, what machines or processes it requires to be produced.

MACHINES \begin{tabular}{|c|c|c|c|c|c|} \hline Product & A & B & C & D & E \\ \hline 1 & 1 & & 1 & & \\ \hline 2 & 1 & & & & \\ \hline 3 & & 1 & & 1 & 1 \\ \hline 4 & 1 & & 1 & & \\ \hline 5 & & 1 & & & \\ \hline 6 & & & & 1 & 1 \\ \hline \end{tabular}