| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [been] [verb] at | 747 |
|
| 2 | [vb past] [been] [verb] [det] | 422 |
|
| 3 | [been] [verb] at [det] | 224 |
|
| 4 | [vb past] [verb] at [det] | 197 |
|
| 5 | [vb past] [been] at [det] | 16 |
|
