Tabla del -2121
| -2121 | X | 1 | = | -2121 |
| -2121 | X | 2 | = | -4242 |
| -2121 | X | 3 | = | -6363 |
| -2121 | X | 4 | = | -8484 |
| -2121 | X | 5 | = | -10605 |
| -2121 | X | 6 | = | -12726 |
| -2121 | X | 7 | = | -14847 |
| -2121 | X | 8 | = | -16968 |
| -2121 | X | 9 | = | -19089 |
| -2121 | X | 10 | = | -21210 |
| -2121 | X | 1 | = | -2121 |
| -2121 | X | 2 | = | -4242 |
| -2121 | X | 3 | = | -6363 |
| -2121 | X | 4 | = | -8484 |
| -2121 | X | 5 | = | -10605 |
| -2121 | X | 6 | = | -12726 |
| -2121 | X | 7 | = | -14847 |
| -2121 | X | 8 | = | -16968 |
| -2121 | X | 9 | = | -19089 |
| -2121 | X | 10 | = | -21210 |