DECLARE
  delimiters TEXT[] := ARRAY[',', '/', '&', 'and'];
  countries TEXT[];
  result TEXT := '';
BEGIN
  countries := string_to_array(countryField, ',');

  FOR i IN 1..array_length(delimiters, 1) LOOP
    countries := array_cat(countries, string_to_array(result, delimiters[i]));
  END LOOP;

  result := array_to_string(countries, ' ');
  RETURN trim(result);
END