1. Mustn't
2. Must
3. Doesn't have to
4. Don't have to
5. Mustn't
6. Have to
7. Don't have to
8. Doesn't have to
9. Mustn't
10. Must
11. Have to
12. Doesn't have to
13. Mustn't
14. Don't have to
15. Mustn't
1. Mustn't
2. Must
3. Doesn't have to
4. Don't have to
5. Mustn't
6. Have to
7. Don't have to
8. Doesn't have to
9. Mustn't
10. Must
11. Have to
12. Doesn't have to
13. Mustn't
14. Don't have to
15. Mustn't