| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb past] at [noun] | 250 |
|
| 2 | [vb past] [been] at [noun] | 166 |
|
| 3 | they [vb past] [been] [noun] | 59 |
|
| 4 | they [vb past] [been] at | 23 |
|
