| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [vb past] [art] [noun] | 3268 |
|
| 2 | [pron] [vb past] at [art] [noun] | 3263 |
|
| 3 | when [pron] [vb past] at [art] | 224 |
|
| 4 | when [pron] [vb past] at [noun] | 173 |
|
