text: -- Weather Observation Station 11 "https://www.hackerrank.com/challenges/weather-observation-station-11/problem"
  
  
  select distinct city from station
  where (substr(lower(city), 1, 1) not in ('a','e','i','o','u')
      or
      substr(lower(city), length(city), 1) not in ('a','e','i','o','u'));
  