How many movies have Ciccio Ingrassia and Franca Haas acted in together?

They have worked on 4 movies together! Their first movie together was I due maggiolini più matti del mondo (1970) while their highest rated movie together was Il clan dei due Borsalini (1971). They have not worked together since The Exorciccio (1975). They are most known for their comedy films together.