| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [vb pp] to [be] important [prep] | 6 |
|
| 2 | [been] [vb pp] to [be] important [prep] | 6 |
|
| 3 | have [been] [vb pp] to [be] important | 5 |
|
| 4 | [verb] [been] [vb pp] to [be] important | 5 |
|
