Observation |
| A |
| B |
| C |
1 | 0 |
| −a |
| −b |
|
2 | 0 |
| a |
| −b |
|
3 | 0 |
| −a |
| b |
|
4 | 0 |
| a |
| b |
|
5 | −a |
| −b |
| 0 |
|
6 | a |
| −b |
| 0 |
|
7 | −a |
| b |
| 0 |
|
8 | a |
| b |
| 0 |
|
9 | −b |
| 0 |
| −a |
|
10 | b |
| 0 |
| −a |
|
11 | −b |
| 0 |
| a |
|
12 | b |
| 0 |
| a |
|