| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] year [pron] | 477 |
|
| 2 | [prep] [num] time [pron] | 161 |
|
| 3 | [prep] [num] year time | 123 |
|
| 4 | [num] year time [pron] | 22 |
|
