Yes, yes, I am here again, and again in an attempt to find out all the game aspects, I ask for your help... I have more or less figured out the concept of clean/dirty, but one detail does not give me peace of mind: Is it possible to classify a lion as dirty if his very distant relatives (moving to another heritage sheet) had cases of inbreeding?

For clarity: In the Trading Center I met an ad for the sale of clean Ferus. In the legacy, the first sheet actually had neither b4 nor inbreeding, but clicking on his great-great-great-great-grandfather and moving to his legacy, there were as many as 4 cases of inbreeding. Is it possible in this case to classify it as clean?
I will be very grateful for an explanation!