How many movies have Navodaya Appachan and Sibi Malayil collaborated on?

They have worked on 4 movies together! Their first movie together was Manjil Virinja Pookkal (1980) while their highest rated movie together was Ente Mamattukkuttiyammakku (1983). They have not worked together since Rareeram (1986). They are most known for their drama films together.