Tabla del -821
| -821 | X | 1 | = | -821 |
| -821 | X | 2 | = | -1642 |
| -821 | X | 3 | = | -2463 |
| -821 | X | 4 | = | -3284 |
| -821 | X | 5 | = | -4105 |
| -821 | X | 6 | = | -4926 |
| -821 | X | 7 | = | -5747 |
| -821 | X | 8 | = | -6568 |
| -821 | X | 9 | = | -7389 |
| -821 | X | 10 | = | -8210 |
| -821 | X | 1 | = | -821 |
| -821 | X | 2 | = | -1642 |
| -821 | X | 3 | = | -2463 |
| -821 | X | 4 | = | -3284 |
| -821 | X | 5 | = | -4105 |
| -821 | X | 6 | = | -4926 |
| -821 | X | 7 | = | -5747 |
| -821 | X | 8 | = | -6568 |
| -821 | X | 9 | = | -7389 |
| -821 | X | 10 | = | -8210 |