| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [been] [prep] [det] | 233 |
|
| 2 | [vb base] [prep] [det] years | 55 |
|
| 3 | [been] [prep] [det] years | 38 |
|
| 4 | [vb base] [been] [prep] years | 10 |
|
