Property instances modal properties

Suppose that in a particular case the N-realizer of an instance of P includes a microphysical state of affairs Cp that qualifies as a / -core. We can suppose that the possessor of P also has property Q, where Q is of a kind such that any possessor of P must have some property of that kind (as, for example, any possessor of a particular shape must have some mass or other). Let Cq be the Q-core that is also a part of the N-realizer of the / -instance and Q-instance. Now it seems that the P instance could have occurred without the instance of Q occurring, and so without Cq occurring. For example, if P is the property of having a certain shape and Q is the property of having a certain mass, then although the instance of P must be accompanied by an instance of some mass property, it does not seem necessary that it should have been accompanied by an instance of the particular mass property Q. (For example, if some of the matter inside a thing had leaked out, it might have had the same shape but a lesser mass.) And if the instances have different modal properties, so should their total (specific) realizers. We can achieve this as follows. 

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