| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] when it [verb] | 681 |
|
| 2 | [conj] when it [vb past] | 285 |
|
| 3 | [conj] when [pron] did | 233 |
|
| 4 | [conj] [conj] it did | 123 |
|
| 5 | [conj] when it do | 56 |
|
