| | | | | A B | A | 1. 40 ~50 | | 2. | 20~30 | A | | | 3. | | 4. | | 5. | | 6. | | B | | 1. | | 2. | 3. | | 4. | 5. | 6. | | 7. | 8. | 9. | | | | | | |