Hi, What is the syntax to filter with multiple facets and multiple facets values using facet_query?

facet_query=category:shoe

Let's say I have such a configuration facetA=[a,b,c] and facetB=[d,e] How can I filter with operators to do something like: facetA:a or facetA:b or facetB:d It is possible what I'm seeking is "filter_by" in fact