| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [been] [v-ing] [det] | 225 |
|
| 2 | [vb past] [been] [v-ing] at | 177 |
|
| 3 | [been] [v-ing] at [det] | 43 |
|
| 4 | [vb past] [v-ing] at [det] | 27 |
|
| 5 | [vb past] [been] at [det] | 16 |
|
