How many movies have Naozumi Yamamoto and Shin Morikawa collaborated on?

They have worked on 13 movies together! Their first movie together was おヤエの女中と幽霊 (1959) while their highest rated movie together was It's Tough Being a Man (1969). They have not worked together since Tora-san's Love Call (1971). They are most known for their comedy films together.