How many movies have Katerina Yioulaki and Stefanos Fotiadis collaborated on?

They have worked on 3 movies together! Their first movie together was Οι χαραμοφάηδες (1961) while their highest rated movie together was Oh, If I Only Were a Man (1966). They have not worked together since Satrapis (1968). They are most known for their comedy films together.