DECLARE
  TYPE t_country_names IS TABLE OF
                 wf_countries.country_name%TYPE
                 INDEX BY BINARY_INTEGER;
  v_country_names      t_country_names;
  CURSOR country_curs IS
    SELECT country_id, country_name
      FROM wf_countries
      WHERE region_id = 5
      ORDER BY country_id;
  v_country_rec       country_curs%ROWTYPE;
BEGIN
  OPEN country_curs;
  LOOP
    FETCH country_curs INTO v_country_rec;
    EXIT WHEN country_curs%NOTFOUND;
    v_country_names(v_country_rec.country_id) :=
                         v_country_rec.country_name;
  END LOOP;
  CLOSE country_curs;
  FOR i IN v_country_names.FIRST .. v_country_names.LAST
  LOOP
    IF v_country_names.EXISTS(i) THEN
      DBMS_OUTPUT.PUT_LINE(i || ' ' || v_country_names(i));
    END IF;
  END LOOP;
END;