How many movies have Hiroyuki Hoshiyama and Shozo Iizuka collaborated on?

They have worked on 4 movies together! Their first movie together was Mobile Suit Gundam I (1981) while their highest rated movie together was Mobile Suit Gundam II: Soldiers of Sorrow (1981). They have not worked together since Lily C.A.T. (1987). They are most known for their animation films together.