Morning Everyone - I wanted to get a better understanding of Recessive Genetics in terms of HETS and POSSIBLE HET percentages. I have seen 33% 50% 66% Possible Het and I'm really not too sure where those numbers come from or what combination of HET and PH pairings create them. I understand that if you breed a visual recessive snake you get 100% HETS just not sure about the below examples. Help, thanks!!

Normal HET x Normal HET =
Normal HET x Normal PH =
Normal PH x Normal PH =