| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] a | 97581 |
|
| 2 | been [vb pp] [prep] | 58901 |
|
| 3 | been [vb pp] a | 1298 |
|
| 4 | been [prep] a | 1107 |
|
