How many movies have Ivan Šlapeta and Zdeňka Černá collaborated on?

They have worked on 9 movies together! Their first movie together was We, the Lost Girls (1972) while their highest rated movie together was Jára Cimrman Lying, Sleeping (1983). They have not worked together since Nemocný bílý slon (1990). They are most known for their drama films together.