How many movies have Sergei Poluyanov and Yevgeni Kumankov collaborated on?

They have worked on 4 movies together! Their first movie together was 12 Chairs (1971) while their highest rated movie together was Ivan Vasilyevich Changes His Profession (1973). They have not worked together since Incognito from St.Petersburg (1978). They are most known for their comedy films together.