|
| A | B | C | D |
| (B × C)1 (B × D)1 (C × D)1 | (A × C)1 (A × D)1 (C × D)2 | (A × B)1 (A × D)2 (B × D)2 | (A × B)2 (A × C)2 (B × C)2 | |
| Y1 | 1 | 1 | 1 | 1 |
| Y2 | 1 | 2 | 2 | 2 |
| Y3 | 1 | 3 | 3 | 3 |
| Y4 | 2 | 1 | 2 | 3 |
| Y5 | 2 | 2 | 3 | 1 |
| Y6 | 2 | 3 | 1 | 2 |
| Y7 | 3 | 1 | 3 | 2 |
| Y8 | 3 | 2 | 1 | 3 |
| Y9 | 3 | 3 | 2 | 1 |