| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] years [pron] | 455 |
|
| 2 | [prep] [num] time [pron] | 211 |
|
| 3 | [prep] [num] years time | 122 |
|
| 4 | [num] years time [pron] | 22 |
|
