How many movies have Kiichi Inada and Nenji Kobayashi collaborated on?

They have worked on 3 movies together! Their first movie together was Prison Walls of Abashiri 3 (1965) while their highest rated movie together was Kamikaze Cop, Marihuana Syndicate (1970). They have not worked together since Yakuza Skirmishes (1972). They are most known for their crime films together.