| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [prep] [noun sg] | 18930 |
|
| 2 | when [prep] [noun sg] | 500 |
|
| 3 | [det] when [noun sg] | 20 |
|
| 4 | [det] when [prep] | 9 |
|
