If my interpretation of the eight functions is correct, I would assume that my legitimate banner traits are: Ni, Ne, Ti, and Fi (in no specific order).
Maybe I can use my social life as en example of that system.
I hardly notice the trivialities of my friends (their appearance, etc.) nor I can recall that much the small things that led to my friendship with them, unless I cherish them so much, so definitely, my Si and Se wouldn't be that developed. In some cases, my mind is bogged down with bigger concepts, making me practically unable to notice small things in their physicality, or what led to it.
My Ne and Ni though is pretty well developed since I have a full understanding of the dynamics of my friendship with them, all the possible angles it can be looked at, and possibly even make a good assessment of its eventuality.
Having an anti-social tendency myself, I tend to cherish friendships that I can build.
Te is basically the hardcore data of the forming of the friendship, which reminds me of something like mapping out, charting out plans in building a social life. Personally, I have a bit of a hate working with charts and hardcore numbers because it dehumanizes the system. Not that I'm saying that I'm suck in math, but sheer absorbing of hardcore data is something that I never realistically embraced.
On the other hand, Ti is the analysis of the strength of the friendship, e.g., does the friendship work or not. Basically an understanding of how tyhe friendship works.
We can look at the difference of Ti and Te as something like, Te is the movie maker, while the Ti is the critic. The critic doesn't normally have the ability to make a film. It can be said for a film maker, who may know how to execute things but doesn't have a vision that a good critic can have.
I view Fe is a way of adapting to the group dynamics of the friendship, getting with the program, etc. However, having a strong sense of self (that is, having NT inclinations), prevents me from sucking up to a level that would be considered socially acceptable.
Fi is basically my overall thoughts on myself, the friends that I have, etc. It's basically me identifying their essence as well as my essence. Fi is therefore, interconnected so much to Ne (various interpretations of the friendship), Ni (assessing its possible eventualities), and Ti (knowing the strengths and weakness of it)--arguably a binding force of the other three.
I think I scored low on Ni because I mistaken it as pure precognition, but by using logic and the concept of cause and effect, I think I can make some educated estimates.