How many movies have A. Shanmugham and M. N. Nambiar collaborated on?

They have worked on 3 movies together! Their first movie together was Netru Indru Naalai (1974) while their highest rated movie together was Ninaithadhai Mudippavan (1975). They have not worked together since Navarathinam (1977). They are most known for their action films together.