| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [prep] [adj] year | 233 |
|
| 2 | known [prep] [adj] year | 41 |
|
| 3 | [vb base] known [prep] [adj] | 31 |
|
| 4 | [vb base] known [prep] year | 12 |
|
