| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb past] [prep] | 113361 |
|
| 2 | when [noun] [vb past] | 6123 |
|
| 3 | when [noun] [prep] | 762 |
|
| 4 | when [vb past] [prep] | 5 |
|
