Before
1a		 After
1b		 Before
2a		 After
2b		 Before
3a		 After
3b		 Before
4a		 After
4b		 Before
5a		 After
5b		 Before
6a		 After
6b		 Before
7a		 After
7b		 Before
8a		 After
8b		 Before
9a		 After
9b