| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is important [to-vb] | 1651 |
|
| 2 | it is important [prep] | 364 |
|
| 3 | it is [to-vb] [prep] | 181 |
|
| 4 | is important [to-vb] [prep] | 172 |
|
| 5 | it important [to-vb] [prep] | 6 |
|
