| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [num] year time | 12 |
|
| 2 | [adv] [num] years time | 12 |
|
| 3 | about [num] year time | 5 |
|
| 4 | about [num] year time | 5 |
|
