What is the maximum number of terms a president can serve according to Amendment #22?

Amendment #22 to the United States Constitution establishes that no person can be elected to the office of the President more than twice. However, in addition to the two terms, the amendment states that a person who has served as president for more than two years of a term to which another person was elected can only be elected to the presidency once more. This means that theoretically, a person could serve up to a maximum of ten years as president: two full elected terms of four years each (eight years) plus up to two years if they assumed the presidency from a predecessor who left office early. Therefore, the option stating ten years reflects the maximum total time a single individual can hold the presidency under the constraints of Amendment #22.