| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [been] [vb pp] at | 568 |
|
| 2 | [vb past] [been] [vb pp] [det] | 181 |
|
| 3 | [been] [vb pp] at [det] | 178 |
|
| 4 | [vb past] [vb pp] at [det] | 82 |
|
| 5 | [vb past] [been] at [det] | 16 |
|
