Ok, here we go. Yes, all of your combinations are valid. All of them could result in the TR being shown. Really, unless you read minds, half of this is luck. And 'normal' isn't really 'normal'. It just menas, that if you have a dominant N in your genes, or both NN, then the TR will not have wings, horn, speacial tail, be fluffy, have a long mane, etc. It will be just basic.
And Axis....I need you to pick one answer and I suggest it be you first. Neitehr nn or ww can result in him. See, ww would be wings, and nn would be basic.
I can explain in more detail about the genes when I get home from school! (Eeck I think I hear the bus! *yelps and runs off*)