 The first two elements are: " ++ show x ++ " and " ++ show y

-- (x:[]) poderia ser escrito c
tell (x:y:_) = "The list is long. The first two elements are: " ++ show x ++ " and " ++ show y
tell (x:y:_) = "The list is long. The first two elements are: " ++ show x ++ " and " ++ show y