| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [prep] us [to-vb] | 11 |
|
| 2 | it [be] for us [to-vb] | 11 |
|
| 3 | it [be] [prep] us [to-vb] | 11 |
|
| 4 | it [is] [prep] us [to-vb] | 10 |
|
| 5 | it is [prep] us [to-vb] | 10 |
|
