| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] when [pron] [vb past] | 3325 |
|
| 2 | [coord] [conj] it [vb past] | 869 |
|
| 3 | [coord] when it [verb] | 535 |
|
| 4 | [conj] when it [vb past] | 285 |
|
