In a five-day period Monday through Friday each of the following temporary office workers worked only one day, each a different day. Mr. Stark was scheduled to work on Monday, but he traded with Ms. Carter, who was originally scheduled to work on Wednesday. Mr. John traded with Mr. Benjam, who was originally scheduled to work on Thursday. If Ms. Cerci did not switch her work on Tuesday with anyone, who worked on Friday, after all the switching was done?