How many movies have Seigo Fukuoka and Tokuji Kobayashi acted in together?

They have worked on 4 movies together! Their first movie together was 悪魔の顔 (1957) while their highest rated movie together was Stakeout (1958). They have not worked together since Parakin to Kyū-chan mōshiwakenai yarō-tachi (1962).