| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [num] year | 1292 |
|
| 2 | it [vb past] [num] | 920 |
|
| 3 | it [num] year | 97 |
|
| 4 | it [vb past] year | 12 |
|
