Activity(A) activity time(3) immediate presecedor(M)
Activity(B) activity time(7) immediate presecedor(M)
Activity(C) activity time(4) immediate presecedor(A)
Activity(D) activity time(2) immediate presecedor(B)
Activity(E) activity time(5) immediate presecedor(C,D)
Activity(F) activity time(6) immediate presecedor(A)
Activity(G) activity time(3) immediate presecedor(F,E)