How many movies have Chellapilla Satyanarayana Sastry and Prabhakar Reddy collaborated on?

They have worked on 4 movies together! Their first movie together was MonagadOstunnadu Jagratha (1972) while their highest rated movie together was Thota Ramudu (1975). They have not worked together since Nakili Manishi (1980). They are most known for their drama films together.