Reconstruct the following syllogistic forms and use the five rules for syllogisms to determine if they are valid from the Boolean standpoint, conditionally valid from the Aristotelian standpoint, or invalid. For those that are conditionally valid, identify the condition that must be fulfilled. For those that are invalid from either the Boolean or Aristotelian standpoint, name the fallacy or fallacies committed. Check your answers by constructing a Venn diagram for each.

1. AAA-3

2. IAI-2

3. EIO-1

4. AAI-2

5. IEO-1

6. EOO-4

7. EAA-1

8. AII-3

9. AAI-4

10. IAO-3

11. AII-2

12. AIO-3

13. AEE-4

14. EAE-4

15. EAO-3

16. EEE-1

17. EAE-1

18. OAI-3

19. AOO-2

20. EAO-1