| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [vb pp] [prep] recent year | 87 |
|
| 2 | [vb -s] [been] [vb pp] [prep] recent | 71 |
|
| 3 | [vb -s] [vb pp] [prep] recent year | 67 |
|
| 4 | [vb -s] [been] [vb pp] [prep] year | 10 |
|
