How many movies have Ciccio Ingrassia and Luciano Ferri collaborated on?

They have worked on 6 movies together! Their first movie together was I 2 pompieri (1968) while their highest rated movie together was It's a Woman's War (1971). They have not worked together since Continuavano a chiamarli i due piloti più matti del mondo (1972). They are most known for their comedy films together.