what are the answers to the missing blanks below?

\begin{tabular}{|c|l|c|} \hline AccountNumber & \multicolumn{1}{|c|}{ Account Name } & Amount \\ \hline 4000 & Sales & \\ \hline 4010 & Sales Returns \& Allowances & \\ \hline 4020 & Sales Discounts & \\ \hline & Net Sales & \\ \hline \end{tabular} \begin{tabular}{|c|l|c|} \hline AccountNumber & \multicolumn{1}{|c|}{ Account Name } & Amount \\ \hline 5000 & Purchases & \\ \hline 5010 & Purchase Returns \& Allowances & \\ \hline 5020 & Purchase Discounts & \\ \hline & Net Purchases & \\ \hline \end{tabular} \begin{tabular}{|c|l|c|} \hline AccountNumber & \multicolumn{1}{|c|}{ Account Name } & Amount \\ \hline 4000 & Sales & \\ \hline 4010 & Sales Returns \& Allowances & \\ \hline 4020 & Sales Discounts & \\ \hline & Net Sales & \\ \hline \end{tabular} \begin{tabular}{|c|l|c|} \hline AccountNumber & \multicolumn{1}{|c|}{ Account Name } & Amount \\ \hline 5000 & Purchases & \\ \hline 5010 & Purchase Returns \& Allowances & \\ \hline 5020 & Purchase Discounts & \\ \hline & Net Purchases & \\ \hline \end{tabular}