| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [prep] [to-vb] | 99 |
|
| 2 | it be [prep] us | 59 |
|
| 3 | be [prep] us [to-vb] | 46 |
|
| 4 | it [prep] us [to-vb] | 10 |
|
