How many movies have Alla Hrachova and Liudmyla Ihnatenko collaborated on?

They have worked on 3 movies together! Their first movie together was Страшный, серый, лохматый (1971) while their highest rated movie together was Петушок и солнышко (1974). They have not worked together since About Everyone In The World (1984). They are most known for their animation films together.