| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] [to-vb] | 7259 |
|
| 2 | been [vb pp] at | 1920 |
|
| 3 | [vb pp] [to-vb] at | 1030 |
|
| 4 | been [to-vb] at | 8 |
|
