| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] it [modal v] [vb infin] | 330 |
|
| 2 | [prep] it [conj] [modal v] | 90 |
|
| 3 | it [conj] [modal v] [vb infin] | 75 |
|
| 4 | [prep] [conj] [modal v] [vb infin] | 55 |
|
