Spelling Unit 13 

1. team’s – belonging to one team
2. players’ – belonging to more then one player
3. bird’s – belonging to one bird
4. wolf’s – belonging to one wolf
5. horse’s – belonging to one horse
6. class’s – belonging to one class
7. group’s – belonging to one group
8. girls’ – belonging to more than one girl
9. students’ – belonging to more than one student
10. trees’ – belonging to more than one tree
11. parents’ – belonging to more than one parent
12. owners’ – belonging to more than one parent
13. cousins’ – belonging to more than one cousin
14. teachers’ – belonging to more than one teacher
15. aunts’ – belonging to more than one aunt
16. friend’s – belonging to one friend
17. wolves’ – belonging to one wolf
18. classes’  - belonging to more than one class