Sprout Forms field rule combination

I’m trying to conditionally display a Sprout Forms field based on multiple drop downs. The first sets the category and displays one of the other three drop downs with it’s sub-categories.

The field should be displayed when the selected category, and it’s sub-category are set, except when one specific sub-category is selected.

The problem is that when that sub-category is selected, then the parent category is changed, the hidden field’s value still hides the field. If the and/or operators could be changed I think I could pull it off with a display condition for each sub-category. Something like (a1 and a2 and a3) or (b1 and b2) or (c1 and c2) conditions.

I’ve tried breaking it up into separate rules, but I haven’t figured out how to set the precedence of the conflicting rules. They seem to enforce their failure criteria as well as success.