I got answer for you.
After I finish three time. I got all number of ranks each level with time! I had found out why 9 to 11 have zero number ranks now show number. That because I don't use cheat to use "happy" to made weapon 3 more powerful. That is why.
Also, I don't use any cheat. But If you use cheat to set skill level affect number of rank. easy level is much lower ranks number but hard level had much higher. For now so.
One more things, Anyone had know of list of ranks. I had got skill rating. I want list of ranks. higher rank, get better! If you know any.
I got go!