---
| |
15. No y are x'. i.e. |---|
| 0 |
---

---
| 1 |
16. All y are x. i.e. |---|
| 0 |
---

---
| 0 |
17. No y exist. i.e. |---|
| 0 |
---

---
| |
18. Some y are x'. i.e. |---|
| 1 |
---

---
| |
15. Some y exist. i.e. |-1-|
| |
---

3. Half of Smaller Diagram.

Symbols interpreted.

__________

1. No x are y'.

2. No x exist.