Non-tree collection hierarchy

I have a case where I want to add to paper to several collections at the same time, because the 'tag' I want to give it/collection I want to put it in, is inherently also related to a grander topic which I want it to also automatically be 'tagged' with. This is usually solved with sub- and parent- collection.
However, in my case, I have a paper that should be placed in the sub-collection (tagged with) "Predictive Safety Filter", which inherently is both related to my other collections "Safe Control" and "Predictive Control", which are not necessarily related to each other.
Is there a way to have two parent collections for a single sub-collections, such that it is added to both the other collections automatically ?

That is, the collection hierarchy is not a tree-structure, but can reconnect down the line.
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