def test_change_letter_changed_uncompressed(self):
     self.assertEqual(change_letter('5KBAYGwSZMU4b7ZPiuXXqjcatskoU3kM2azx6wyqn6N1B1nEobE'),
                      '5KBAYGwSZMU4a7ZPiuXXqjcatskoU3kM2azx6wyqn6N1B1nEobE')
 def test_change_letter_right_key_uncompressed(self):
     self.assertEqual(change_letter('5KNUh7ypiA3xQ4ZZwvz64kPjkjUBvD8NBU3FE4nxnBu4VobE7ee'),
                      '5KNUh7ypiA3xQ4ZZwvz64kPjkjUBvD8NBU3FE4nxnBu4VobE7ee')
 def test_change_letter_changed_compressed(self):
     self.assertEqual(change_letter('L433DdCPMDvkJ4RMR5LwNZU4p8UW8fTDMj2KpMaYU5bEusr9PcUq'),
                      'L433DdCPMDvkJ4RMR5LwNZU4p8UW8fTDMjTKpMaYU5bEusr9PcUq')
 def test_change_letter_changed_2_letters_compressed(self):
     self.assertEqual(change_letter('L2G8duFU7a1vyxUiJdBjsYurYWnRzTqFKambknhp2cY2vQiijWw8', 2),
                      'L2G8duFU7aSvyxUiJdBjsYurYWnRzTqFKambknhp2cYyvQiijWw8')
 def test_change_letter_right_key_compressed(self):
     self.assertEqual(change_letter('L2NdgGDMb6RmX6CoCRrXRPyfr1q8jBBa3jkSjHhU39HxXReCrHr8'),
                      'L2NdgGDMb6RmX6CoCRrXRPyfr1q8jBBa3jkSjHhU39HxXReCrHr8')
 def test_change_letter_broken_compressed(self):
     self.assertEqual(change_letter('L2G8duFU7acvyxUiJd22sYurYW123TqFKambknhp2cYyvQiijWw8'), '\nCouldn\'t find any result')
 def test_change_letter_broken_uncompressed(self):
     self.assertEqual(change_letter('5K8urwsDdSrer52uNiXxw2YqAJ9owpNJVU3fQZpi4ThUNneM8PA'), '\nCouldn\'t find any result')
 def test_change_letter_broken_uncompressed(self):
     self.assertEqual(
         change_letter(
             '5K8urwsDdSrer52uNiXxw2YqAJ9owpNJVU3fQZpi4ThUNneM8PA'),
         '\nCouldn\'t find any result')
 def test_change_letter_changed_2_letters_compressed(self):
     self.assertEqual(
         change_letter(
             'L2G8duFU7a1vyxUiJdBjsYurYWnRzTqFKambknhp2cY2vQiijWw8', 2),
         'L2G8duFU7aSvyxUiJdBjsYurYWnRzTqFKambknhp2cYyvQiijWw8')
 def test_change_letter_broken_compressed(self):
     self.assertEqual(
         change_letter(
             'L2G8duFU7acvyxUiJd22sYurYW123TqFKambknhp2cYyvQiijWw8'),
         '\nCouldn\'t find any result')
 def test_change_letter_changed_uncompressed(self):
     self.assertEqual(
         change_letter(
             '5KBAYGwSZMU4b7ZPiuXXqjcatskoU3kM2azx6wyqn6N1B1nEobE'),
         '5KBAYGwSZMU4a7ZPiuXXqjcatskoU3kM2azx6wyqn6N1B1nEobE')
 def test_change_letter_changed_compressed(self):
     self.assertEqual(
         change_letter(
             'L433DdCPMDvkJ4RMR5LwNZU4p8UW8fTDMj2KpMaYU5bEusr9PcUq'),
         'L433DdCPMDvkJ4RMR5LwNZU4p8UW8fTDMjTKpMaYU5bEusr9PcUq')
 def test_change_letter_right_key_uncompressed(self):
     self.assertEqual(
         change_letter(
             '5KNUh7ypiA3xQ4ZZwvz64kPjkjUBvD8NBU3FE4nxnBu4VobE7ee'),
         '5KNUh7ypiA3xQ4ZZwvz64kPjkjUBvD8NBU3FE4nxnBu4VobE7ee')
 def test_change_letter_right_key_compressed(self):
     self.assertEqual(
         change_letter(
             'L2NdgGDMb6RmX6CoCRrXRPyfr1q8jBBa3jkSjHhU39HxXReCrHr8'),
         'L2NdgGDMb6RmX6CoCRrXRPyfr1q8jBBa3jkSjHhU39HxXReCrHr8')