| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pron] [verb] [noun] [verb] | 320 |
|
| 2 | [conj] it [verb] [noun] [verb] | 286 |
|
| 3 | [subord] it [verb] [noun] [verb] | 127 |
|
| 4 | when it [verb] [noun] [verb] | 18 |
|
