| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] a [noun] for [noun] | 684 |
|
| 2 | [verb] a opportunity for [noun] | 63 |
|
| 3 | [vb past] [art] opportunity for [noun] | 27 |
|
| 4 | [vb past] a opportunity [prep] [noun] | 16 |
|
