Luis has visited only twenty-five places or only twenty-one people
Luis has visited Costa Rica, Ireland, Liechtenstein, Belgium, Syria, Slovakia, Eritrea, Botswana, Niger, Venezuela, Marshall Islands, Qatar, Saint Kitts & Nevis, Slovenia, Djibouti, Palau, Cambodia, South Korea, Spain, Tajikistan, Romania, Ghana, Malawi, Armenia, Tanzania and Bahrain