| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [adv] important [prep] | 37 |
|
| 2 | [Wh det] have [been] [adv] [prep] | 14 |
|
| 3 | [Wh det] have [been] [adv] important | 10 |
|
