How many movies have Elli Castrén and Tauno Lahtinen collaborated on?

They have worked on 6 movies together! Their first movie together was Uuno Turhapuro menettää muistinsa (1982) while their highest rated movie together was Uuno Turhapuro armeijan leivissä (1984). They have not worked together since Tupla-Uuno (1988). They are most known for their comedy films together.