| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a | 310451 |
|
| 2 | [noun sg] [prep] a | 232866 |
|
| 3 | opportunity [prep] [art] | 486 |
|
| 4 | opportunity [prep] [art] | 486 |
|
| 5 | opportunity [prep] a | 211 |
|
| 6 | opportunity [prep] a | 180 |
|
| 7 | opportunity [prep] a | 154 |
|
