Each type shares values and commonalities with every other type. You can only cut out types if you reject the two other categories I´m talking about. Nines and Eights both belong to the Instinctive Triad.In that case, we can probably conclude that your wing can't be any type that shares no values with your core type. That automatically cuts out four types, and leaves behind four that could possibly be a person's wing (consult the type chart to know which). It's worth noting that this already makes some of the original wings impossible. For example. there can no longer be a 9w8, because 9s and 8s share no values.