| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] when [pron] [verb] | 12233 |
|
| 2 | [noun pl] when [pron] [verb] | 1903 |
|
| 3 | problems [conj] [pron] [verb] | 322 |
|
| 4 | problem when [pron] [verb] | 69 |
|
