How many movies have Gülşen Bubikoğlu and Çetin Gürtop collaborated on?

They have worked on 21 movies together! Their first movie together was Bitirimler Sosyetede (1973) while their highest rated movie together was Baş Belası (1976). They have not worked together since Madde 438 (1991). They are most known for their drama films together.