| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [vb infin] [adv] | 3367 |
|
| 2 | [prep] it [modal v] [vb infin] | 330 |
|
| 3 | [prep] it [modal v] [adv] | 199 |
|
| 4 | [prep] [modal v] [vb infin] [adv] | 23 |
|
