| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [art] opportunity | 26 |
|
| 2 | have been [vb pp] [art] opportunity | 26 |
|
| 3 | have been given [art] opportunity | 21 |
|
| 4 | have been [vb pp] the opportunity | 19 |
|
| 5 | have been [vb pp] the opportunity | 19 |
|
| 6 | has been [vb pp] [art] opportunity | 8 |
|
| 7 | had been [vb pp] [art] opportunity | 5 |
|
