| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [adv] been [prep] | 1484 |
|
| 2 | have been shown [prep] | 355 |
|
| 3 | have [adv] been shown | 156 |
|
| 4 | [adv] been shown [prep] | 76 |
|
| 5 | have [adv] shown [prep] | 23 |
|
