How many movies have K. Sarangapani and W. R. Subba Rao collaborated on?

They have worked on 4 movies together! Their first movie together was Alibabavum 40 Thirudargalum (1956) while their highest rated movie together was Navarathiri (1964). They have not worked together since Navarathiri (1964). They are most known for their drama films together.