| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when it [verb] [prep] | 2068 |
|
| 2 | when it [vb past] [prep] | 676 |
|
| 3 | [conj] it happened [prep] | 63 |
|
| 4 | when it happen [prep] | 20 |
|
| 5 | when [pron] happened [prep] | 10 |
|
| 6 | when [pers pn] happened [prep] | 9 |
|
| 7 | when it happened [prep] | 7 |
|
