| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [verb] to | 357 |
|
| 2 | when it is [adv] [verb] | 65 |
|
| 3 | when it is [verb] to | 34 |
|
| 4 | when it [adv] [verb] to | 11 |
|
