def test_equals_7(self):
     self.assertEqual(sc('SONsonfather'), 'SONson')
 def test_equals_5(self):
     self.assertEqual(sc('SONson'), 'SONson')
 def test_equals_6(self):
     self.assertEqual(sc('FfAaTtHhEeRr'), 'FfAaTtHhEeRr')
 def test_equals_4(self):
     self.assertEqual(sc("AabBc"), "AabB")
 def test_equals_4(self):
     self.assertEqual(sc('AabBc'), 'AabB')
 def test_equals_10(self):
     self.assertEqual(sc('monkeyDONKEY'), 'onkeyONKEY')
 def test_equals(self):
     self.assertEqual(sc('AaaaAaab'), 'AaaaAaa')
 def test_equals_10(self):
     self.assertEqual(sc("monkeyDONKEY"), "onkeyONKEY")
 def test_equals_11(self):
     self.assertEqual(sc("BANAna"), "ANAna")
 def test_equals_8(self):
     self.assertEqual(sc("sonfather"), "")
 def test_equals_9(self):
     self.assertEqual(sc("DONKEYmonkey"), "ONKEYonkey")
 def test_equals_7(self):
     self.assertEqual(sc("SONsonfather"), "SONson")
 def test_equals_6(self):
     self.assertEqual(sc("FfAaTtHhEeRr"), "FfAaTtHhEeRr")
 def test_equals_5(self):
     self.assertEqual(sc("SONson"), "SONson")
 def test_equals_8(self):
     self.assertEqual(sc('sonfather'), '')
 def test_equals(self):
     self.assertEqual(sc("AaaaAaab"), "AaaaAaa")
 def test_equals_9(self):
     self.assertEqual(sc('DONKEYmonkey'), 'ONKEYonkey')
 def test_equals_2(self):
     self.assertEqual(sc("aAAAaAAb"), "aAAAaAA")
 def test_equals_11(self):
     self.assertEqual(sc('BANAna'), 'ANAna')
 def test_equals_3(self):
     self.assertEqual(sc('Aab'), 'Aa')
 def test_equals_2(self):
     self.assertEqual(sc('aAAAaAAb'), 'aAAAaAA')
 def test_equals_3(self):
     self.assertEqual(sc("Aab"), "Aa")