How many movies have M. Umanath and V. S. Raghavan collaborated on?

They have worked on 3 movies together! Their first movie together was Shanti Nilayam (1969) while their highest rated movie together was Ninaithadhai Mudippavan (1975). They have not worked together since Naanum Oru Thozhilali (1986). They are most known for their drama films together.