| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be important [prep] us | 30 |
|
| 2 | be important [prep] us [verb] | 22 |
|
| 3 | it be [prep] us [verb] | 16 |
|
| 4 | it be important [prep] [verb] | 15 |
|
