| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be an [noun] | 16641 |
|
| 2 | be an [noun sg] | 16102 |
|
| 3 | be [art] opportunity | 405 |
|
| 4 | be [art] opportunity | 405 |
|
| 5 | be a opportunity | 256 |
|
| 6 | be an opportunity | 253 |
|
| 7 | [be] an opportunity | 253 |
|
