| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] [noun] [to-vb] | 650 |
|
| 2 | when it [verb] [noun] | 190 |
|
| 3 | when it [verb] [to-vb] | 190 |
|
| 4 | when [verb] [noun] [to-vb] | 23 |
|
