| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [verb] [pron] [prep] | 896 |
|
| 2 | when [pron] [num ord] [verb] [pron] | 319 |
|
| 3 | when [pron] [num ord] [verb] [prep] | 248 |
|
| 4 | [pron] [num ord] [verb] [pron] [prep] | 85 |
|
