| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back to [num] | 368 |
|
| 2 | back to [num] | 368 |
|
| 3 | back to one | 31 |
|
| 4 | back to zero | 13 |
|
| 5 | back to nineteen | 12 |
|
| 6 | back to two | 8 |
|
| 7 | back to four | 7 |
|
| 8 | back to 1985 | 5 |
|
| 9 | back to 1986 | 5 |
|
| 10 | back to three | 5 |
|
