| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] [num] years time | 6 |
|
| 2 | [vb pp] [prep] [num] year time | 6 |
|
| 3 | [vb pp] in [num] year time | 6 |
|
| 4 | [vb pp] in [num] year time | 6 |
|
