module FiveDogs
  dog = 
  dOg = 
  doG = 
  Dog =    
  DOG =   

  names = [dog, dOg, doG, Dog, DOG]
  names.uniq!
  puts  % [names.length, names.join()]
  puts
  puts  % local_variables.join()
  puts  % constants.join()
end