| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [art] | 2284 |
|
| 2 | have [vb pp] [art] opportunity | 232 |
|
| 3 | been [vb pp] [art] opportunity | 40 |
|
| 4 | have been [art] opportunity | 16 |
|
