For each task not on the critical path, by how much could the start be delayed assuming that each task on critical path starts at the earliest opportunity?

\begin{tabular}{|l|l|l|} \hline Task number & Duration in week & Depends on task \\ \hline 1 & 6 & \\ \hline 2 & 3 & \\ \hline 3 & 4 & 1 \\ \hline 4 & 6 & \\ \hline 5 & 5 & 1,3 \\ \hline 6 & 3 & 1,3,4 \\ \hline 7 & 2 & 5 \\ \hline 8 & 5 & 6 \\ \hline 9 & 3 & 2,8 \\ \hline 10 & 7 & 7,8 \\ \hline \end{tabular}