Irene has visited only twenty-one places or only nine people
Irene has visited Columbus, Westerly, Winona, Flagstaff, Lewistown, Laramie, Wallingford, Montpelier, Cleburne, Truth or Consequences, Auburn, Cohoes, Oregon City, Watervliet, Chelsea, Independence, San Angelo, Park Forest, Livermore, Honesdale, Chanute and Litchfield