How many movies have Arnold Alvaro and Ishmael Bernal collaborated on?

They have worked on 5 movies together! Their first movie together was Ligaw na Bulaklak (1976) while their highest rated movie together was Nunal sa Tubig (1976). They have not worked together since Lagi na Lamang Ba Akong Babae? (1978). They are most known for their drama films together.