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| −3 | −2 | −1 | 0 | 1 | 2 | 3 |
| −3 | −1 | 0 | 0 | 1 | 2 | 2 | 3 |
−2 | −2 | −1 | 0 | 0 | 1 | 2 | 3 | |
−1 | −2 | −2 | −1 | 0 | 1 | 2 | 3 | |
0 | −3 | −2 | −1 | 0 | 1 | 1 | 3 | |
1 | −3 | −2 | −1 | 0 | 1 | 1 | 2 | |
2 | −3 | −2 | −1 | 0 | 0 | 1 | 2 | |
3 | −3 | −2 | −2 | −1 | 0 | 0 | 1 |