How many movies have Gennady Krylov and Vyacheslav Kotyonochkin collaborated on?

They have worked on 4 movies together! Their first movie together was Ну, погоди! Выпуск 1 (1969) and was their highest rated movie together. They have not worked together since Ну, погоди! Выпуск 5 (1972). They are most known for their animation films together.