| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have [vb pp] [art] | 3725 |
|
| 2 | they have been [vb pp] | 2385 |
|
| 3 | have been [vb pp] [art] | 2284 |
|
| 4 | they have been [art] | 75 |
|
