In a survey of 268 professional athletes, it was found that 138 of them owned a convertible, 106 of them owned a giant screen TV, and 121 owned a sporting goods store. 26 owned a convertible and a store, 37 owned a TV and a store, and 65 owned a covertible and a TV. 10 owned all three items. How many athletes owned at least one type of item in the survey