| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] shown to have | 31 |
|
| 2 | have [been] shown [art] | 28 |
|
| 3 | [been] shown to have [art] | 9 |
|
| 4 | have [been] to have [art] | 7 |
|
