| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there [was/were] opportunity for | 8 |
|
| 2 | [pron] [was/were] opportunity for | 8 |
|
| 3 | there [was/were] opportunity for | 8 |
|
| 4 | [ex0] [was/were] opportunity for | 8 |
|
| 5 | [pron] [was/were] opportunities for | 6 |
|
| 6 | [pron] were opportunity for | 6 |
|
