Draw the network diagram based on the following information:
1. is the first job of the project.
2. N are the two final jobs for project completion.
3. K precedes O.
4. N follows L and M.
5. J restricts the start of K and M.
6. C and B depend on the completion of A.
7. D follows B and may go on in parallel with C and E.
8. E follows C.
9. I restrict the start of J and L.
10 .H and G also restrict K and M.
11. F must precede G and may go in parallel with H.
12. E and D restrict H and I.
13. C must precede F.