Construct an AON nefwork according to the activity description below. Libel ac tivities by their letters and node numbers. Remove redundant relationships and arrange activities in proper sequence steps. Show all calculations.

Activity $H$ is followed by activities V$,$ X$,$ L and Z$.$

Activity C precedes activity Pand follows the completion of activities Q$.$ I, and I.

The predecessors to activity $N$ are activities $1,K$ and $A.$

Activity $O$ follows activities $D$ and $x,$ and preoedes activaty $P$

Activity I is preceded by activities I, D$,$ and I.

Activity I follows activity If and precedes activity $Q$

Activity $U$ can start when activities $V$ and $x$ are completed

Activity D follows actrity $U$

Activity $E$ depends on actwity L$.$ and H Hand precedes Aftavities T$.$ N$,$ and I

Activity $M$ is preceded by activitas $x,L,$ and $\frac{?}{{?}_{?}}$ and is followed by activities $A$