A positive integer n is chosen and a relation D is defined on the set {x ∈ N : x divides n} yDz if and only if y divides z. For each of the following diagrams, state whether such a diagram
can be the Hasse diagram of D for some choice of n (and some choice of the variables in the diagram). For any that can be, find the least possible positive value of n that will produce such a diagram and draw the diagram for this value of n.
 

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