| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] a [noun] | 4448 |
|
| 2 | when [verb] a [noun] | 509 |
|
| 3 | when it [verb] [noun] | 190 |
|
| 4 | when it [verb] a | 88 |
|
