| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] [prep] | 58900 |
|
| 2 | [to-vb] [vb pp] [prep] | 3834 |
|
| 3 | [to-vb] been [vb pp] | 2673 |
|
| 4 | [to-vb] been [prep] | 289 |
|
