Tabla del 661
| 661 | X | 1 | = | 661 |
| 661 | X | 2 | = | 1322 |
| 661 | X | 3 | = | 1983 |
| 661 | X | 4 | = | 2644 |
| 661 | X | 5 | = | 3305 |
| 661 | X | 6 | = | 3966 |
| 661 | X | 7 | = | 4627 |
| 661 | X | 8 | = | 5288 |
| 661 | X | 9 | = | 5949 |
| 661 | X | 10 | = | 6610 |
| 661 | X | 1 | = | 661 |
| 661 | X | 2 | = | 1322 |
| 661 | X | 3 | = | 1983 |
| 661 | X | 4 | = | 2644 |
| 661 | X | 5 | = | 3305 |
| 661 | X | 6 | = | 3966 |
| 661 | X | 7 | = | 4627 |
| 661 | X | 8 | = | 5288 |
| 661 | X | 9 | = | 5949 |
| 661 | X | 10 | = | 6610 |