text: import unittest
  
  from solutions.elementary.three_words import my_solution
  
  
  class TestSolution(unittest.TestCase):
  
      def test_solution(self):
          self.assertTrue(my_solution('Hello World hello'))
          self.assertFalse(my_solution('He is 123 man'))
          self.assertFalse(my_solution('1 2 3 4'))
          self.assertTrue(my_solution('bla bla bla bla'))
          self.assertFalse(my_solution('Hi'))
  
  
  if __name__ == '__main___':
      unittest.main()
  