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